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75 Cards in this Set

  • Front
  • Back
Histamine, ACh, and gastrin share what in common?
They increase gastric acid secretion by parietal cells of stomach.
Somatostain, GIP, prostaglandin, and secretin share what in common?
They downregulate gastric acid secretion.
Pepsin is released by what?
Chief cells of the stomach
Inactive pepsinogen is converted to pepsin by?
H+
HCO3- secretion by mucosal cells of stomach and duodenum increased by what?
secretin (released by S cells of duodenum in response to acid)
Phenylalanine and tryptophan are potent stimulators of what GI hormone?
Gastrin
What upregulates CCK secretion?
Fatty acids and amino acids in duodenum .
What are the three actions of CCK?
1) inc. pancreatic secretion
2) inc. gallbladder contraction (bile needed to emulsify and absorb lipids in duodenum)
3) dec. gastric emptying
What is implicated in loss of lower esophageal tone of achalasia?
loss of NO secretion (NO -> increased SM relaxation)
What are the two actions of GIP (Gastric Inhibitory Peptide)?
1) Exocrine: dec. gastric H+ secretion
2) Endocrine: inc. insulin release
Two actions of VIP (Vasoactive Intestinal Polypeptide)?
1) inc. intestinal water and electrolyte secretion
2) inc. relaxation of intestinal SM and sphincters
Name three upregulators of H+ secretion.
1) Histamine
2) Ach
3) Gastrin
Trypsinogen is converted to active trypsin enzyme by?
enterokinase/enteropeptidase (enzyme secreted from duodenal mucosa)
This enzyme activates other proenzymes and additional trypsinogen in a positive feedback loop.
Trypsin (released by pancreas)
This enzyme hydrolyzes alpha-1,4 linkages to yield disaccharides.
salivary amylase
What two substances inhibit gastric acid secretion?
Somatostatin, prostaglandins
What are the three monsaccharides absorbed by enterocytes?
glucose, galactose, fructose
Glucose and Galactose are taken up by enterocytes by what transporter?
SGLT1 (Na+ dependent)
Fructose is taken up by enterocytes by what transporter?
Glut-5
All monosaccharides transported to blood by what transporter?
GLUT-2
What does conjugating bile acids to glycine or taurine do?
It makes them water soluble
Secondary achalasia may result from what disease?
Chagas' disease
What syndrome is associated w/ esophageal dysmotility involving low pressure proximal to LES?
Scleroderma (CREST syndrome)
Painless mucosal lacerations at GE junction due to severe vomiting. Leads to hematamesis. Typically found in alcoholics and bulimics. Disease?
Mallory-Weiss syndrome
Transmural esophageal rupture due to violent retching. Syndrome?
Boerhaave syndrome
Associated with lye ingestion.
Esophageal strictures
Triad of: (1) dysphagia (due to esophageal webs), (2) glossitis, and (3) iron deficiency anemia. What syndrome?
Plummer-Vinson syndrome
Replacement of nonkeratinized (stratified) squamous epithelium with intestinal (columnar) epithelium in distal esophagus (glandular metaplasia) due to what? Called what?
Due to chronic acid reflux (GERD) and called Barrett's esophagus.
What can Barrett's esophagus become?
Adenocarcinoma (BARRett's Becomes Adenocarcinoma, Results from Reflux)
What three pathogens is esophagitis associated with?
HSV-1, CMV, Candida
What are the risk factors for esophageal cancer?
Alcohol/Achalasia, Barrett's esophagus, Cigarettes, Diverticuli (e.g., Zenker's diverticulum), Esophageal web (e.g., P-V)/Esophagitis, Familial ("ABCDEF")
Where does SCC of esophagus hit?
Upper and middle 1/3
Where does adenocarcinoma of esophagus hit?
Lower 1/3
Worldwide, which esophageal cancer is most common?
SCC. In U.S. SCC and adenocarcinoma equal in incidence.
What part of GI tract does celiac sprue affect?
Proximal small bowel
What part of GI tract does tropical sprue affect?
Entire small bowel
Etiology of Whipple's disease?
Infection w/ Tropheryma whippelii (gram positive)
What tumor marker is used to test for recurrences of CRC?
CEA (Carcinoembryonic Antigen)
FAP with osseous and soft tissue tumors, retinal hyperplasia. Disease?
Gardner's syndrome
FAP with possible brain involvement (gliobastoma). Disease?
Turcot's syndrome
Which part of the colon is always involved with HNPCC/Lynch syndrome?
Proximal colon
Benign polyposis syndrome that leads to hyperpigmented mouth, lips, hands, genitalia?
Peutz-Jeghers syndrome
Most common site for carcinoid tumors?
SI
"Nutmeg" appearance of liver due to what disease process?
Chronic passive biliary congestion
Rare fatal syndrome associated with viral infection (VZV and influenza B) that has been treated with salycilates (Aspirin).
Reye's syndrome
What's the relationship of AST and ALT in alcoholic hepatitis?
AST > ALT (ratio usually > 1.5). Mnemonic: You're toASTed with alcoholic hepatitis.
What's the relationship of AST and ALT in viral hepatitis?
ALT > AST.
What lab finding is associated with hepatocellular carcinoma?
alpha-fetoprotein
Most common metastatic site of hepatocellular carcinoma?
Lung
What syndrome is associated with polycythemia vera, pregnancy, and HCC?
Budd-Chiari syndrome
Hereditary hyperbilirubinemia due to dec. bilirubin uptake.
Gilbert's Syndrome
Hereditary hyperbilirubinemia due to decreased or absent UGT.
Gilbert's syndrome (asymptomatic) or Crigler-Najjar syndrome, type I (fatal, absent UGT). C-N syndrome type II is less severe and responds to phenobarbital which inc. liver enzyme synthesis.
Hereditary hyperbilirubinemia due to defective liver excretion of bilirubin.
Dubin-Johnson syndrome. Rotor's syndrome simiilar but even milder and does not cause black liver.
Increased antimitochondrial antibodies and IgM. Disease?
Primary sclerosing cholangitis
What disease is highly associated with tumor marker CA-19-9?
Pancreatic adenocarcinoma (also associated with CEA)
This drug is used for:
1) prevention of NSAID-induced petic ulcers
2) maintenance of PDA
3) used to induce labor
Misoprostol (PGE-1 analog). Increased production of gastric mucous barrier and decreases acid production. Toxicity = diarrhea, and contraindicated in women of childbearing potential (arbotifacient).
Common side effect of aluminium hydroxide antacid?
Constipation (aluMINIMUM amount of feces). Also hypophosphatemia due to antacids binding phosphate.
Common side effect of Magnesium hydroxide?
Diarrhea (Must Go to the bathroom)
Common side effect of Calcium carbonate?
Hypercalcemia
What prokinetic drug used for diabetic and post-surgery gastroparesis works via D2-receptor antagonism?
Metoclopramide (also used for N/V due to D2 blocking activity in CTZ).
What mAb to TNF-alpha cytokine used to treat RA and Crohn's disease?
Infliximab
30 yo w/ diarrhea, blood per rectum; intestinal biopsy shows transmural inflammation. Dx?
Crohn's disease
Most common cause of idiopathic hyperbilirubinemia?
Gilbert's syndrome
55 yo w/ chronic GERD presents w/ esophageal cancer. Most likely histologic subtype?
Adenocarcinoma
Woman presents w/ alternating bouts of painful diarrhea and constipation. Normal colonoscopy. Most likely Dx?
Irritable Bowel Syndrome.
Name abdominal layers going from outside to inside.
Skin
Superficial fascia
External oblique
Internal oblique
Transversus abdominis
Transversalis fascia
Extraperitoneal tissue
Peritoneum
(Menmonic: Sally Struthers Eats Indian Toddlers To Enlarge Peritoneum)
Falciform Ligament (connections and structures contained)
Connects: liver to anterior abdominal wall
Contains: Ligamentum teres
Note: derivative of fetal umbilical vein
Hepatoduodenal ligament (connections and structures contained)
Connects liver to duodeum
Contains portal triad
Note: May be compressed b/w thum and index finger placed in epiploic foramen (of Winslow) to control bleeding. Connects greater and lesser sacs.
Gastrohepatic Ligament (connections and structures contained)
Connects Liver to lessure curvature of stomach.
Contains gastric arteries
Note: Separtes right greater and lesser sacs. May be cut during surgery to access lesser sac.
Gastrocolic Ligament (connections and structures contained)
Connects greater curvature and transverse colon.
Contains gastroepiploic arteries
Note: Part of greater omentum.
Gastrosplenic Ligament (connections and structures contained)
Connects greater curvature and spleen.
Contains short gastrics
Note: Separates left greater and lesser sacs.
Splenorenal ligament (connections and structures contained)
Connects spleen to posterior abdominal wall.
Contains splenic artery and vein
Femoral Region general organization?
Lateral to medial:
Nerve
Artery
Vein
Empty space
Lymphatics
("NAVEL")
Femoral triangle contents?
Femoral vein, artery, and nerve
What does the femoral sheath contain?
The femoral vein, artery, and canal (deep inguinal lymph nodes) but NOT femoral nerve.