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61 Cards in this Set

  • Front
  • Back
1 made of muscle
2 named by direction
3 verticalis
4 muscles that move tongue end w/ glossus
5 innervated CN XII
6 allows food to be mixed & assists w/ swallowing
Verticalis (in tongue)
1 superior longitudinal
2 inferior longitudinal
3 transverse
upper jaw: 3m,2p,1c,2i X 2=32
lower jaw: 3m,2p,1c,2i X 2=32
64 total
Fx:bite,tear,puncture & chew
Salivary Gland Facts
1 Everything paired=6 glands
2 1.5 liters of saliva secreted daily
Salivary Gland contains...
1 parotid gland
2 submandibular gland
3 sublingual gland
Salivary Gland:Parotid gland
1 100% serous
2 mixed gland
3 largest salivary gland
4 contributes saliva when eating
5 parotid duct(stenson's duct)opening is at the upper level 2nd molar tooth.
6 innervated by parasympathetic nerves
Salivary Gland:Submandibular
1 mixed (mostly serous)
2 produces daily saliva
Salivary Gland:Sublingual
1 mixed (mostly mucous)
2 Sjogren disease- AI disease characterized by blue bumps under the tongue (stones in sublingual duct)
1 Tube that moves food down to the stomach
2 Lined by stratified squamous epithelium
3 Has mucous glands
4 2 layers of muscle: outer longitudinal & inner circular
5 perstalsis- rhythmic movement to push food down
Concept of G.I tract
1 Mucosa- has epithelium
2 Submucosa- blood vessels & nerves
3 Muscularis- muscle to move the food
4 Serosa- outermost layer
Stomach contents
1 cardia
2 cardiac notch (incisure)
3 fundus-housed by air
4 body
5 greater curvature
6 lesser curvature-has angular notch
7 pyloric sphincter- end of stomach
8 pylorus- antrum & canal
9 duodenum
Stomach (internal)
1 rugae-folds inside stomach increase surface circumfrence
2 gastric gland and pit
Stomach wall has ___ layers
3 layers:outer longitudinal,inner circular &innermost is oblique
Gastric gland & pit contents
1 mucous barrier
2 surface mucous cells
3 gastric pit-entrance to gland
4 Surface neck mucous cell
5 parietal cells
6 chief cells(zymogenic)
7 chromaffin cells
Mucous barrier
prevents acid from eating the epithelium
Surface mucous cells
made of simple columnar epithelium. Secrete mucous
surface neck mucous cell
produces plug of mucous. The plug of mucous covers the pit so the acid can’t go inside.
Parietal cells (in body of gland) secretes:
1 HCL (ph 1-1.3)
2 Intrinsic factor:carrier for extrinsic factor (EF or colobamin = Vit B12)
EF-IF Complex
EF-IF Complex→ s.intestine→ blood→ liver(Vit.B12 stored in liver)
Lack of IF causes...
Vit.B12 to be excreted and leads to Pernicious Anemia (lack of IF)
Chief Cells (zymogenic cells) secretes...
1 Pepsinogen- inactive proteolytic enzyme In the presence of HCL, pepsinogen changes to:
* Pepsin- powerful proteolytic enzyme that digests protein
chromaffin cells
located only on bottom of gland. Silver stained cell. Secretes the hormone:
1 Seratonin (5 hydroxytryptamine)- secreted into the blood & regulates blood supply to the gland
Vascularization of stomach
1 lesser curvature
2 greater curvature
3 fundus
lesser curvature (vascularization)
1 Lf gastric artery → stomach
2 Rt gastric artery
3 Common hepatic artery → liver
ii. Rt gastric artery
iii. Common hepatic artery ® liver
greater curvature(vascularization)
1 Lf gastroepiploic artery
2 Rt gastropepiploic artery
Fundus (vascularization)
1 Short gastric artery
2 Splenic artery → spleen
Stomach innervation:sympathetic
1 Constipation
2 Closure of cardiac & pyloric sphincters
3 ↓Peristalsis
4­ ↑Mucus secretion
stomach innervation:parasympathetic
1 Diarrhea
2 Open cardiac & pyloric sphincters
3 ↑perstalsis
4­ ↑HCI secretion
stomach innervation: sensory
Travel w/ sympathetic & parasympathetic fibers, associated w/ T-7 & T-8 spinal chord nerves (pain).
Stomach clinical applications
1 gastritis
2 peptic ulcer
3 stomach carcinoma
inflammation of intestinal lining (epithelium) of stomach caused by excessive alcohol intake or excessive intake of spices.
i. Epigastric pain aggravated by eating.
peptic ulcer
erosion of mucosa of GI tract that is in contact w/ acid. Caused by bacteria called H.Pylori
i. Epigastric pain on an empty stomach. Relieved by food, antacids or vomiting
ii. Commonly in lesser curvature
iii. Ulcer in greater curvature can turn into stomach cancer
stomach carcinoma(cancer)
linked by excessive intake of nitrites or packaged meats, over time.
i. Patients over 40 y.o
ii. Blood in stool
iii. Commonly in greater curvature
iv. #1 carcinogenic product = bacon
Biliary Tract contents
1 Hepatic Ducts (2)
2 Common hepatic duct- when two hepatic ducts join
3 Cystic Duct- attached to gallbladder
4 Common bile duct- where the cystic duct & common hepatic duct meet
5 Main pancreatic duct
6 Ampulla of Vater
7 Duodenal Papilla (Sphincter of Oddi)
secreted by hepatocytes, it drains into the gallbladder for storage. Bile emulsifies fat for better absorption by the s. intestine
Bile facts
1 99.9% of fat is absorbed by the s. intestine wall → blood w/ out expenditure of energy
2 0.01%
3 Bile represents the exocrine function of the liver.
4 Bile secreted from liver is alkaline
5 Bile made of cholesterol + fatty acids
6 Bile eliminates cholesterol through the stool
7 Bile gives stool green/yellow color w/ out it, stool is white = fat comes out (Steatorrhea)
8 Bile sitting too long in the GB w/ out coming out may precipitate
1 Presence of fat in stomach or duodenum makes the gallbladder contract
2 Fx of GB wall is to take the bicarbonate ions away made by acid (bicarbonate ions turn into gallstones
fatty stool caused by stone in common bile duct
Classic features of patient w/ GB stone (6 “F” patient)
1 Female
2 40 y.o
3 Fertile
4 Fair complexion
5 Fat
6 Flatulance
Gallstones caused by....
fatty diets, crash diets (fasting), by taking lithogenic hormone (type of estrogen that promotes gallstone formation)
Liver & Pancreas Similarities
1 Arise from embryonic stage from the primitive gut
2 Mixed glands (exocrine and endocrine).
3 Share common terminal duct
4 Target organs of each other (**blood sugar homeostasis)
Endocrine/exocrine fx = hormone → blood
1 Exocrine → secretion → duct → cavity (i.e stomach)
2 Endocrine = ductless system (secretion → blood)
Exocrine requires
endocrine have
no ducts
liver (exocrine/endocrine)
1 Exocrine fx- bile secretion
2 Endocrine fx- release of glucose (converted from glycogen <stored sugar>) → blood
*Liver stores glycogen, converts it to glucose → blood*
*Proteins made by liver end w/ (-in…albumin, globulin etc)
pancreas (exocrine/endocrine)
1 Exocrine fx- secretes digestive enzymes (-ase)
2 Endocrine fx
*Insulin- hypoglycemic agent (brings ↓ blood sugar)
*Glucagon- hyperglycemic agent (brings ↑­ blood sugar)
*Blood sugar must be between 90mg/100ml
How Pancreas controls blood sugar level (homeostasis)
1­ ↑Blood sugar level → beta cell of pancreas ~~>insulin →blood → body cells take up more glucose + liver takes up glucose and stores it as glycogen = blood glucose ↓
2 ↓ Blood sugar level → alpha cells of pancreas ~~> glucagons →blood → liver breaks down glycogen and releases glucose to the blood → blood glucose level ­↑
DM Type 1 (IDDM)
3 Skinny Body
4 Req. insulin shot
5 Frequent complications
6 Diabetic retinopathy
a Diabetic nephopathy
b Diabetic neuropathy
c Diabetic cardiovascular problems
d Ketoacidosis
e Gangrene
DM Type 2 (NIDDM)
1 Older adults
2 Caused by bad diet
3 Overweight
4 Managed by diet, if not successful, insulin shot req.
5 May have complications
DM Classic Signs 3 “P”s
1 Polyphagia
2 Polydypsia
3 Polyuria
Liver features
1 4 lobes
2 falciform ligament-membrane between Rt. Lobe & Lf. Lobe
3 Round ligament of the liver (Ligamentum teres hepatis)
4 Porta Hepatis (gate of liver)
liver lobes
1 Rt. Lobe- largest lobe
2 Lf. Lobe
3 Quadrate lobe (square)- next to GB
4 Caudate lobe (tail)- smallest lobe, next to IVC
Round ligament of the liver (Ligamentum teres hepatis)
housed by Falciform ligament
1 Before birth Round ligament of liver was the Lf. Umbilical vein, which carries the blood from the placenta to the child, bypassing the liver (so mother can have clean blood)
Porta Hepatis (gate of liver)
a. Portal vein
b. Hepatic artery
c. Common bile duct
d. Autonomic nerves (3) & lymph vessels
Hepatic veins are __ found in the Porta Hepatis because...
2 they begin in the liver and drain the blood into the IVC.
liver innervation (symp)
*fight or flight
1 Liver will convert glycogen (stored sugar) into glucose = blood sugar ↑(hyperglycemia)
1 If in danger the blood passing through the liver must increase to carry all the sugar out of the muscle = ­↑ blood flow
liver innervation (para)
1 Travels w/ Vagus nerve (CN X)
2­ Bile secretion
3 Enterogastrone reflex- triggered by presence of fat in the stomach or duodenum = controls GB contraction
liver innervation (sensory)
1 Pain in Rt. Side of back, costal area or Rt. Shoulder if liver or GB is diseased
Pancreas parts
1 Held by duodenum
2 Head
3 Neck
4 Body
5 Tail
6 Uncinated process (trigger)- covered by blood vessels (superior mesenteric vessels)
7 Superior Mesenteric Vessels- cover the uncinated process
8 Main pancreatic duct
9 Accessory pancreatic duct
Pancreas:Endocrine Function (to maintain BS homeostasis)
1 Beta cells secrete insulin to lower blood sugar
a. Secreted when blood sugar is high
b. Deficiency of insulin = diabetes mellitus
2 Alpha cells secrete glucagon to elevate blood sugar
a. Secreted when blood sugar is low
3 Normal blood glucose level = 90mg/100ml
a.180-200 = borderline diabetes
b.200+ = diabetic
c.< 60 = hypoglycemic
Pancreas:Exocrine Function (digestive enzyme “-ase”)
1­ ↑Amylase in blood = pancreatitis (caused by alcoholism)
2 Bicarbonate ion fluid- it neutralizes the chyme (an acid that comes from stomach and goes down the duodenum)