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198 Cards in this Set
- Front
- Back
retroperitoneal structures
|
duodenum (2nd, 3rd, 4th parts)
descending colon asscending colon kidney and ureters pancrease (except tail) Aorta IVC adrenal glands rectum |
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derivative of fetal umbilical vein
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falciform ligament (connect liver to anterior abdominal wall)
|
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connects greater and less omental sacs
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hepatoduodenal ligament
|
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ligament that contains portal triad
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hepatoduodenal ligament
|
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ligament that contain splenic artery and vein
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splenorenal
|
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three gastric ligaments that contain: gastric, gastroepiploic, and short gastric arteries respectively
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gastric arteries - gastrohepatic
gastroepiploic - gastrocolic short gastrics - gastrosplenic |
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separates the mucosa and the submucosa
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muscularis mucosa
|
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where are meissner's and aurbach's plexi found respectively
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meissner's plexus - submucosa
auerbach's plexus - muscularis externa |
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frequencies of basal electric rhythm (slow waves) of: stomach, duodenum, ileum
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stomach - 3 waves/min
duodenum - 12 waves/min ileum - 9 waves/min |
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where are brunner's glands of the submucosa found
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duodenum
|
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this section has the largest number of goblet cells in the small intestine
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jejunum
|
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this section contain only crypts and no villi
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colon
|
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muscle of esophagus
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upper 1/3 - striated muscle
middle 1/3 - striated and smooth lower 1/3 - smooth muscle |
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where does the celiac trunk, superior, and inferior mesenteric branch off respectively(vertebral level)
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celiac - T12
superior - L1 inferior - L3 |
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where is the bifurcation of the aorta in terms of vertebral level
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L4
|
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does the superior mesenteric branch of above or below renal arteries
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above
|
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structures associated with the embryonic foregut
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stomach to proximal duodenum; liver, gallbladder, pancreas, spleen
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structures associated with embryonic midgut
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distal duodenum to proximal 2/3 of transverse colon
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structure associated with embryonic hindgut
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distal 1/3 of transverse colon to upper portion of the rectum
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three branches of celiac trunk
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common hepatic
splenic left gastric |
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4 collateral circulations if abdominal aorta is blocked
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1. internal thoracic (subclavian) - superior/inferior epigastric
2. superior pancreaticoduodenal (celiac) - inferior pancreaticoduodenal (SMA) 3. middle colic (SMA) - left colic (IMA) 4. superior rectal (IMA) - middle rectal (Internal Iliac) |
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3 portosystemic anastomoses, clinical signs along with veins involved
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1. esophageal varices (left gastric - esophageal)
2. caput medusa (paraumbilical - superficial and inferior epigastric) 3. internal hemorrhoids (superior rectal - middle and inferior rectal) **these are all VEINS |
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formed where hindgut meets ectoderm
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pectinate line
|
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what is found above the pectinate line
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internal hemorroids
adenocarcinoma arterial supply from superior rectal artery (IMA) venous drainage to inferior mesenteric vein (portal system) |
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what is found below the pectinate line
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external hemorrhoids
squamous cell carcinoma arterial supply from inferior rectal artery (pudendal artery) drainage to inferior rectal vein (IVC) |
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what type of hemorrhoids are painful
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external hemorrhoids, inffervated by inferior rectal nerve (branch of pudendal nerve)
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what makes up the common bile duct
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cystic duct from gallbladder + common hepatic duct (joining of left and right hepatic ducts)
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tumors in the head of the pancreas can obstruct what
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common bile duct
|
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what two things make of the ampulla of vater
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pancreatic duct
common bile duct |
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femoral region organization from lateral to medial
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NAVEL: (venous near the penis)
nerve, artery, vein, empty, lymphatics |
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what does the femoral sheath contain, and where is it located
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located below inguinal ligament
contains femoral vein, artery, and canal (deep inguinal lymph nodes), but NOT femoral nerve |
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what does the femoral triangle contain
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femoral vein, artery, and nerve
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what fascia makes up the inguinal ligament
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external oblique
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what is the landmark of a direct vs. indirect hernia
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inferior epigastric vessels
medial side - direct lateral side - indirect |
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most common diaphragmatic hernia (abdominal structures enter the thorax)
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sliding hiatal hernia
|
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differentiate sliding vs. paraesophageal hernia
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sliding - GE junction is displaced
paraesophageal - GE junction is normal, cardia moves into the thorax |
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this type of hernia goes through the internal (deep) inguinal ring, external (superficial) inguinal ring, and into the scrotum
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indirect inguinal hernia
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occurs in infants due to failure of processus vaginalis to close (can form hydrocele)
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indirect inguinal hernia
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this type of hernia is covered by all 3 layers of spermatic fascia
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indirect inguinal hernia
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this type of hernia is only covered by external spermatic fascia
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direct inguinal hernia
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this hernia protrudes through the inguinal triangle (Hesselbach's), bulges directly through abdominal wall, and goes through external (superficial) inguinal ring only
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direct inguinal hernia
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protrudes below inguinal ligament through femoral canal and lateral to pubic tuberacle
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femoral hernia
|
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this type of hernia is more common in women
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femoral
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leading cause of bowel incarceration in women
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femoral hernia
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what makes up the inguinal (Hesselbach's) triangle
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inferior epigastric artery
lateral border of rectus abdominis inguinal ligament |
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hormone secreted by antrum of stomach that increases gastric H secretion and growth of gastric mucosa
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gastrin
|
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what two amino acids are potent stimulators of gastrin
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tryptophan
phenylalanine |
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hormone secreted by duodenum and jejunum that increases pancreatic secretions and gallbladder contraction
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cholecystokinin
|
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hormone secreted by duodenum that increases pancreatic bicarb secretion and bile secretion, and decreases gastric acid secretion
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secretin
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what is the job of bicarb in the GI tract
|
to neutralize gastric acid and allow pancreatic enzymes to function
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this inhibitory hormone is found in both pancreatic islet cells and GI mucosa
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somatostatin
|
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what hormone allows an oral glucose load to be use more rapidly than an IV one
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GIP
|
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non alpha, non Beta islet cell pancreatic tumor associated with copious diarrhea
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VIPoma
|
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this parasympathetic ganglia hormone causes intestinal water and electrolyte secretion along with relaxation of smooth muscle and sphincters
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VIP
|
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this hormone is associated with migrating motor complexes
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motilin
|
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when is motilin increased
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fasting state
|
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produced by parietal cells of the stomach and is used to bind Vitamin B12
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intrinsic factor
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what three things regulate increased gastric acid secretion
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histamine
ACh gastrin |
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hormone associated with increased bicarb secretion
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secretin
|
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secreted by chief cells of the stomach
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pepsin
|
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three salivary glands
which ones are the most mucinous and most serous |
parotid (most serous)
submandibular sublingual (most mucinous) *serous on the sides, mucinous in the middle |
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what stimulates salivary secretion
|
sympathetic (T1-T3): superior cervical ganglion
parasympathetic: facial and glossopharyngeal nerve |
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differentiate low and high flow rate of salivary secretion
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low rate - hypotonic because more time to reabsorb Na and Cl
high rate - isotonic |
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what nerve runs through the parotid gland and can become damaged during surgery
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CN VII
|
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function of salivary secretion (4)
|
1. a-amylase to begin starch digestion
2. bicarb to neutralize oral bacterial acids 3. mucins to lubricate food 4. growth factors to promote epithelial renewal |
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how does gastrin increase acid secretion
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directly on parietal cells via CCKB
but MOSTLY indirectly through ECL cells leading to histamine release which bind to H2 receptor |
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most important mechanism for gastric acid release
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ECL cells releasing histamine to be H2 receptor on parietal cells
|
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three different types of receptors that cause gastric acid secretion
what are their respective secondary messenger systems |
M3 receptor (ACh) - IP3
CCKB receptor (gastrin) - IP3 H2 receptor (histamine) - cAMP |
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what does omeprazole block
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H/K pump on gastric parietal cells
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glands that secrete alkaline mucus to neutralize acid contents entering the duodenum
*the only GI submucosal glands |
brunner's glands
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what activates trypsin
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enterokinase/enteropeptidase, enzyme secreted from duodenal mucosa
|
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hypertrophy of brunner's glands is seen in what
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peptic ulcer disease of the duodenum
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the rate-limiting step of carbohydrate digestion, produces monosaccharides from oligo and disaccharides
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oligosaccharide hydrolases (brush border enzymes)
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what transports all carbohydrates to the blood from enterocytes
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GLUT-2
|
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facilitates fructose diffusion
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GLUT-5
|
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where are iron, folate, and B12 absorbed respectively
|
Iron (Fe 2+ only) - duodenum
folate - jejunum B12 - ileum (requires intrinsic factor) |
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unencapsulated lymphoid tissue found in the lamina propria and submucosa of small intestine, contains specialized M cells
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peyer's patches
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what do B cells in the germinal centers of Peyer's patches differentiate into
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IgA-secretory plasma cells
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the only significant mechanism for cholesterol excretion
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bile salt excretion
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needed for both digestion of triglycerides and micelle formation (absorption of lipids)
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bile salts
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what is direct bilirubin conjugated with
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glucuronic acid to make water soluble via glucuronyl transferase
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what happens to conjugated bilirubin once excreted into bile
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gut bacteria transform to urobilinogen - most is excreted into feces, some excreted into urine as urobilin, and some is taken back to the liver
|
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most common parotid gland tumor; painless, moveable mass
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pleomorphic adenoma
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benign parotid gland tumor, heterotopic salivary gland tissue trapped in a lymph node, surrounded by lymphatic tissue
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Warthin's tumor
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most common malignant salivary gland tumor (usually in parotid)
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mucoepidermoid carcinoma
|
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failure of relaxation of lower esophageal sphincter (LES) due to loss of myenteric (Auerbach's) plexus
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achalasia
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Bird's beak on barium swallow
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achalasia
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what can secondary achalasia arise from
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Chaga's disease
|
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associated with increased risk of esophageal squamous cell carcinoma
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achalasia
|
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common presents as heartburn, regurgitation, nocturnal coughing, and dyspnea
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GERD
|
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organisms associated with esophagitis
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HSV-1
CMV Candida |
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transmural esophageal rupture due to violent retching
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boerhaave syndrome
|
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mucosal lacerations at the GE junction associated with alcoholics and bulimics
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Mallory-Weiss syndrome
|
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plummer-vinson syndrome triad
|
1. dysphagia (esophageal web)
2. glossitis 3. iron deficiency anemia |
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glandular metaplasia in the epithelium of the distal esophagus due to GERD, associated with esophagitis, ulcers, and increased risk of adenocarcinoma
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Barrett's esophagus
|
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where is squamous cell carcinoma and adenocarcinoma of the esophagus found respectively
|
SCC - upper 1/3
adenocarcinoma - lower 1/3 |
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what is the most common type of esophageal cancer worldwide vs. United States
|
worldwide - SCC
U.S. - adenocarcinoma |
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malabsorption syndrome
|
sprue (tropical or celiac)
whipple's disease disaccharidase deficiency abetalipoproteinemia pancreatic insufficiency |
|
infectious sprue that is similar to celiac sprue, however can affect entire small bowel
|
tropical sprue
|
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PAS-positive macrophages in intestinal lamina propria, arthralgias, cardiac, and neurologic symptoms are common
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whipple's disease
|
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autoantibodies to gluten, proximal small bowel primarily
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celiac sprue
|
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presents in childhood with malabsorption and neurologic manifestations, inability to generate chylomicrons
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abetalipoproteinemia
|
|
causes pancreatic insufficiency
|
CF
obstructing cancer chronic pancreatitis |
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associated with antibodies to gliadin and tissue transglutaminase, blunting of villi, decreased mucosal absorption that primarily affect jejunum
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celiac sprue
|
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associated with dermatitis herpetiformis and increased risk of T-cell lymphoma
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celiac sprue
|
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causes of acute gastritis (erosive)
|
stress
NSAIDs alcohol uremia burns (Curling's ulcer) brain injury (Cushing's ulcer) |
|
Curling's ulcer
|
decreased plasma volume leads to sloughing of gastric mucosa
|
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Cushing's ulcer
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increased vagal stimulation leads to increased ACh causing increased gastric acid production
|
|
causes of chronic gastritis (nonerosive)
|
autoimmune to parietal cells (pernicious anemia)
H. pylori infection |
|
where is type A and B chronic gastritis found respectively
|
type A - gastric body
type B - antrum |
|
gastric hypertrophy with protein loss, parietal cell atrophy, and increased mucous cells
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menetrier's disease
|
|
linitis plastica
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adenocarcinoma of the stomach that is diffusely infiltrative with thickened appearance, leather bottle
|
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virchow's node
|
involvement of left supraclavicular node by metastasis from stomach
|
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bilateral metastasis to ovaries from stomach carcinoma, abundant mucus and signit ring cells
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Krukenberg's tumor
|
|
causes of adenocarcinoma of stomach
|
nitrosamines (smoked foods)
achlorhydria chronic gastritis |
|
potential complications of peptic ulcers
|
bleeding
penetration into pancreas perforation obstruction |
|
differentiate gastric and duodenal ulcers
|
gastric - pain greater with meals, H. pylori in 70%, chronic NSAID use, due to decreased mucosal protection
duodenal - pain decreases with meals, H. pylori almost 100%, due to increased gastric acid secretion, hypertrophy of Brunner's glands |
|
IBD associated with: skip lesions, rectal sparing, transmural inflammation, creeping fat, noncaseating granulomas, and fistulas
|
Crohn's disease
|
|
IBD associated with: continuous lesions, always with rectal involvement, mucosal and submucosal inflammation only, pseudopolyps, bloody diarrhea
|
ulcerative colitis
|
|
extraintestinal manifestations of Crohn's disease
|
migratory polyarthritis
erythema nodosum ankylosing spondylitis uveitis |
|
recurrent abdominal pain associated with pain improving with defecation, change in stool frequency and appearance.
|
IBS
|
|
may present with diarrhea, constipation, or alternating with no structural abnormalities present
|
IBS
|
|
differentiate cause of appendicitis in kids vs. adults
|
kids - lymphoid hyperplasia after viral infection
adults - obstruction by fecalith |
|
differentiate true vs. false diverticulum
|
true - all 3 gut wall layer outpouch
false - only mucosa and submucosa outpouch |
|
most common location for diverticulum
|
sigmoid colon
|
|
many diverticula most commonly in sigmoid colon, caused by increased intraluminal pressure associated with low-fiber diets
|
diverticulosis
|
|
inflammation of diverticula classically causing LLQ pain, fever, leukocytosis
|
diverticulitis
|
|
often asymptomatic or associated with vague discomfort and painless rectal bleeding
|
diverticulosis
|
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false diverticulum that is a herniation of mucosal tissue at junction of pharynx and esophagus
|
zenker's diverticulum
|
|
true diverticulum that is a persistence of the vitelline duct or yolk stalk, may contain ectopic gastric mucosa or pancreatic tissue
|
meckel's diverticulum
|
|
most common congenital anomaly of the GI tract
|
meckel's diverticulum
|
|
what can cause intussusception in children
|
usually idopathic, however may be viral (adenovirus)
|
|
where does volvulus usually occur
|
cecum and sigmoid colon because there is redundant mesentery
|
|
congenital megacolon characterized by lack of ganglion cells/enteric nervous plexuses in segment
|
hirschsprung's disease
|
|
due to failure of neural crest cell migration and associated with down syndrome
|
hirschsprung's disease
|
|
double bubble, causes early bilious vomiting, associated with down syndrome
|
duodenal atresia
|
|
seen in CF, meconium plug obstructs intestine preventing stool passage at birth
|
meconium ileus
|
|
necrosis of intestinal mucosa, usually in the colon, associated with preemie babies
|
necrotizing enterocolitis
|
|
reduction in intestinal blood flow causing ischemia (ischemic colitis) typically occur where
|
splenic flexure
|
|
bleeding due to tortuous dilation of vessels most often found in cecum
|
angiodysplasia
|
|
most common non-neoplastic poly in colon
|
hyperplastic
|
|
mostly sporadic lesions in children < 5 year of age, if single there is no malignant potential
|
juvenile
|
|
autosomal dominant syndrome featuring multiple nonmalignant hamartomas throughout GI tract along with hyperpigmented mouth and lips
|
peutz-jeghers
|
|
is peutz-jeghers syndrome associated with increased risk of colorectal cancer
|
yes, however the polyps themselves are nonmalignant
|
|
autosomal dominant mutation of APC gene on chromosome 5q, 100% progress to colorectal cancer
|
familial adenomas polyposis
|
|
FAP + osseous and soft tissue tumors, retinal hyperplasia
|
gardner's syndrome
|
|
FAP + malignant CNS tumor
|
turcot's syndrome
|
|
autosomal dominant mutation of DNA mismatch repair genes, proximal colon is always involved
|
hereditary nonpolyposis colorectal cancer
|
|
associated with iron deficiency anemia in older males, apple core lesions on barium enema, CEA tumor maker
|
colorectal cancer
|
|
what determines if carcinoid syndrome is observed or not
|
location - confined to GI system, no carcinoid syndrome is observed since liver metabolizes 5-HT; If metastases (usually to liver) then carcinoid syndrome is observed
|
|
classic symptoms of carcinoid syndrome
|
wheezing
right-sided heart murmurs diarrhea flushing |
|
tumor of neuro-endorcrine cells that are usually located in appendix, ileum, and rectum
|
carcinoid tumor
|
|
causes of micronodular (< 3 mm nodules) in liver
|
alcohol
hematchromatosis wilson's disease |
|
causes of macronodular liver nodules
|
postinfectious or drug-induced hepatitis
*associated with increased risk of hepatocellular carcinoma |
|
effects of liver cell failure
|
coma
terrible breath (fetor hepaticus) spider nevi gynecomastia jaundice testicular atrophy asterixis anemia |
|
differentiate ALT > AST, AST > ALT
|
ALT > AST - viral hepatitis
AST > ALT - alcholic hepatitis |
|
increased levels of alkaline phosphatase (ALP)
|
obstructive liver disease (hepatocellular carcinoma), bone disease, bile duct disease
|
|
associated with decreased ceruloplasmin
|
Wilson's disease
|
|
associated with increased lipase
|
acute pancreatitis
*chronic pancreatitis has no enzyme elevations |
|
two associated with elevated serum amylase
|
acute pancreatitis
mumps |
|
childhood hepatoencephalopathy due to child taking salicylates for viral infection
|
Reye's syndrome
|
|
hepatoencephalopathy associated with decreased B-oxidation by reversible inhibition of mitochondrial enzymes leading to microvesicular fatty change
|
Reye's syndrome
|
|
associated with macrovesicular fatty change
|
hepatic steatosis
|
|
differentiate micro/macrovesicular fatty change
|
microvesicular - aspirin in child with fever
macrovesicular - alcohol |
|
associated with swollen and necrotic hepatocytes with neutrophilic infiltration, mallory bodies are also present (intracytoplasmic eosinophilis inclusions)
|
alcoholic hepatitis
|
|
micronodular irregular shrunken liver with sclerosis around central vein
|
alcoholic cirrhosis
|
|
most common primary malignant tumor of the liver in adults, increased incidence with HBV, HCV, Wilson's, hemochromatosis, a1-antitrypsin deficiency, alcohol, aflatoxin
|
hepatocellular carcinoma
|
|
tumor associated with increased a-FP
|
hepatocellular carcinoma
|
|
cause of nutmeg liver
|
backup of blood into liver - Right sided heart failure, Budd-Chiari syndrome
|
|
occlusion of IVC or hepatic veins with centrilobular congestion and necrosis
|
Budd-Chiari syndrome
|
|
causes of Budd-Chiari syndrome
|
hypercoagulable state
polycythemia rubra vera pregnancy |
|
misfolded gene product protein accumulates in hepatocellular endoplasmic reticulum, PAS-positive globules in liver
|
a1-antitrypsin deficiency
|
|
associated with panacinar emphysema due to decreased elastic tissue in lungs along with liver liver
|
a1-antitrypsin deficiency
|
|
immature UDP-glucuronyl transferase leading to unconjugated hyperbilirubinemia
|
neonatal jaundice
|
|
what does phototherapy due to neonatal jaundice
|
converts UCB to water-soluble form (conjugated)
|
|
differntiate urine bilirubin and urine urobilinogen found in: obstructive and hemolytic
|
obstructive - increased conjugated bilirubin in blood leading to increased urine bilirubin and decreased urine urobilinogen
hemolytic - increased unconjugated bilirubin in blood leading to absent urine bilirubin and increased urine urobilinogen |
|
mildly decreased UDP-glucuronyl transferase or decreased biliurbin uptake leading to elevated unconjugated bilirubin, but no clinical consequences
|
Gilbert's syndrome
|
|
absent UDP-glucuronyl transferase leading to elevated unconjugated bilirubin; however patients die within a few years
|
Crigler-Najjar syndrome
|
|
what is the treatment for type II Crigler-Najjar syndrome
|
phenobarbital because it's less severe and this drug increases liver enzyme synthesis
|
|
associated with conjugated hyperbilirubinemia due to defective liver excretion, causes grossly black liver
|
dubin-johnson syndrome
|
|
like dubin-johnson syndrome but milder and does not cause black liver
|
rotor's syndrome
|
|
inadequate hepatic copper excretion and failure of copper to enter circulation
|
Wilson's disease
|
|
treatment of Wilson's disease
|
penicillamine
|
|
where does copper accumulate in Wilson's disease
|
liver, brain, cornea, kidneys, joints
|
|
associated with asterixis, basal ganglia degeneration, cirrhosis, choreiform movements, dementia
|
Wilson's disesae
|
|
classic triad or hemochromatosis
|
micronodular cirrhosis
dibetis mellitus skin pigmentation |
|
associated with increased ferritin, iron, and transferrin saturation, with decreased TIBC
|
hemochromatosis
|
|
secondary biliary cirrhosis
|
extrahepatic biliary obstruction (gallstone, biliary stricture, chronic pancreatitis, carcinoma of the pancreatic head)
|
|
autoimmune reaction associated with increased serum mitochondrial antibodies
|
primary biliary cirrhosis
|
|
bile duct fibrosis leading to alternating beading of intra and extrahepatic bile ducts
|
primary sclerosing cholangitis
|
|
presentation of biliary tract diseases
|
pruritis, jaundice, dark urine, light stools, hepatosplenomegaly
|
|
associated with increased conjugated bilirubin, increased cholesterol, and increased alkaline phosphatase
|
biliary tract diseases
|
|
biliary tract disease associated with ulcerative colitis
|
primary sclerosing cholangitis
|
|
presentation of cholangitis
|
jaundice
fever RUQ pain (positive murphy's sign - inspiratory arrest on deep palpation) |
|
in what type of patient would biliary colic not present with pain
|
diabetic
|
|
potential problems associated with pancreatitis
|
DIC, ARDS, diffuse fat necrosis, hypocalcemia, pseudocyst formation
|
|
associative causes of pancreatic adenocarcinoma
|
cigarettes
chronic pancreatitis (not alcohol) |
|
presentation of pancreatic adenocarcinoma (4)
|
1. abdominal pain radiating to back
2. weight loss 3. migratory thrombophlebitis 4. obstructive jaundice with palpable gallbladder |