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Chapter 23: GI Tract pt. 2
Cards based on the outline for Ch.23
41
Anatomy
Undergraduate 1
11/21/2016

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Cards

Term
What tissue is in the mucosa if the tongue?
Definition
stratified squamous ept.
Term
What are papillae in the tongue?
Definition
projections on dorsal surface of tongue, taste buds in some of them
Term
What specific type of muscle tissue is in the tongue?
Definition
skeletal muscle
Term
Where does the intrinsic muscles insert and originate?
Definition
both originate and insert into substance of tongue
Term
Where does the extrinsic muscles originate?
Definition
mandible and styloid process
Term
What does the term "glosso" or "glossus" refer to?
Definition
tongue
Term
What cranial nerve provides motor innervation to the tongue muscles?
Definition
CN 12
Term
What are the major functions of the tongue?
Definition
chewing
swallowing
speech
taste
Term
Why are the salivary glands considered exocrine rather than endocrine glands?
Definition
Term
Into which specific cavity do the salivary ducts open?
Definition
oral cavity
Term
What are 3 major components of saliva?
Definition
water
lysosome (antibacterial substance)
amylase
Term
What is the action of amylase?
Definition
digest starches
Term
Which bones have a alveolar processes that house the teeth?
Definition
maxilla and mandible
Term
What is periodontial disease?
Definition
infection of your gums
Term
true or false? At least some of the liver has to function in order for the person to survive
Definition
Term
What do terms "hepar" and "hepato" refer to?
Definition
liver
Term
Where is the falciform ligament located and what is its function?
Definition
location: ventral wall of the liver
function: hold liver in position
Term
Where is the round ligament located?
Definition
located in the free edge of the falciform ligament
Term
What is the ligamentum teres a remnant of?
Definition
umbilical cord
Term
What is the lesser omentum?
Definition
peritoneal fold between the lesser curvature of the stomach and lover
Term
Name the lobes of the liver
Definition
-right lobe
-left lobe
-caudate lobe (between hepatic portal vein and IVC)
-quadrate lobe (next to gallbladder)
Term
What blood vessel supplies oxygenated blood to the liver?
Definition
hepatic arteries
Term
What 2 specific veins join together to form the Hepatic Portal Vein?
Definition
superior mesenteric and splenic vein
Term
What are hepatocytes?
Definition
liver cells (cords of hepatocytes alternate with sinusoids)
Term
What are sinusoids?
Definition
(space) large capillaries with large pores that allow blood cells to pass trhough
Term
What is the central vein?
Definition
venous structure in center of each hepatic lobule (sinusoids dran into the central vein)
Term
What is the location of the Portal (hepatic) triad?
Definition
at the corners of the polygonal lobule
Term
What are the components of the Portal (hepatic) triad?
Definition
(portal venule) Br. of Heptaic portal vein
(portal arteriole) Br. hepatic artery
(bile duct) tributary of bile duct system
Term
What are the cells of the hepatic lobule?
Definition
hepatocytes
Term
What cells line the sinusoids?
Definition
endothelial cells
kupffer cells (macrophages scatted in the lining of sinusoids)
Term
What is the function of the hepatocytes?
Definition
regulate blood levels of substances
synthesizes substances (ie bile components)
helps maintain liver homeostasis
Term
What are the main functions of the liver?
Definition
-production of bile
-synthesize plasma proteins
-detoxify harmful substances
-breakdown alcohol
-glycogen stroage
-etc
Term
What is the function of bile?
Definition
contains bile salts that break up fat into smaller droplets
Term
What are the bile canaliculus?
Definition
smallest part of the duct system between the adjacent hepatocytes
Term
What do fibrinogen, globulins, and alubumin proteins do? (liver synthesizes these)
Definition
fibrinogen: helps with clotting
globulins:
alubumin:
Term
Do you expect to find abundant RER in hepatocytes?
Definition
true
Term
Where is the pancreas located?
Definition
lies in the C-shaped curvature of the duodenum and posterior to the stomach
Term
What are the parts of the pancreas and what gland makes up 99% of the organ? gland that makes up 1%?
Definition
head, neck, body, tail
exocrine gland
endocrine gland
Term
What consists in the exocrine gland and what does it produce?
Definition
-acini: clusters of grapes
-acinar cells: each grape is a pancreatic acinar cell
-product: digestive enzyme that complete the digestive process in the small intestine
Term
What consists in the endocrine gland?
Definition
islets of Langerhans: pancreatic islets
Term
What do Beta cells produce? What do alpha cells produce?
Definition
Beta: secrete insulin, lowering blood sugar levels
(lack of Beta cells > type1 diabetes)
Alpha: secrete glucagon, raising blood sugar
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