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AH 110 CH5
Chapter 5
36
Medical
Undergraduate 1
03/20/2009

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Term
absorption
Definition
Passage of materials through the walls of the small intestine into the bloodstream.
Term
amino acids
Definition
Building blocks of proteins, produced when proteins are digested.
Term
amylase
Definition
Enzyme secreted by the pancreas to digest starch.
Term
anus
Definition
Opening of the digestive tract to the outside of the body.
Term
appendix
Definition
Blind pouch hanging from the cecum (in the RLQ). It literally means hanging.
Term
bile
Definition
Digestive juice made in the liver and stored in the gallbladder. It breaks up (emulsifies) large fat globules.
Term
bilirubin
Definition
Pigment released by the liver in bile.
Term
bowel
Definition
Intestine.
Term
canine teeth
Definition
Pointed, "dog-tooth"-like teeth, next to (distal to) the incisors. Also called cuspids or eyeteeth.
Term
cecum
Definition
First part of the large intestine.
Term
colon
Definition
Large intestine, consisting of the cecum; the ascending, transverse, and descending segments of the colon; and the rectum.
Term
common bile duct
Definition
Carries bile from the liver and gallbladder to the duodenum. Also called the choledochus.
Term
defecation
Definition
Elimination of feces from the digestive tract through the rectum.
Term
deglutition
Definition
Swallowing.
Term
dentin
Definition
Major tissue composing teeth, covered by the enamel in the crown and a protective layer of cementum in the root.
Term
digestion
Definition
Breakdown of complex foods to simpler forms.
Term
duodenum
Definition
First part of the small intestine; 12 inches long.
Term
elimination
Definition
Act of removal of materials from the body; in the digestive system, the removal of indigestible materials.
Term
emulsification
Definition
Physical process of breaking up large fat globules into smaller globules, thereby increasing the surface area that enzymes can use to digest the fat.
Term
enamel
Definition
Hard, outermost layer of a tooth.
Term
enzyme
Definition
A chemical that speeds up a reaction between substances; break down complex foods into simpler ones; names end in -ase.
Term
esophagus
Definition
Tube connecting the throat to the stomach.
Term
fatty acids
Definition
Substances produced when fats are digested.
Term
feces
Definition
Solid wastes; stools.
Term
gallbladder
Definition
Small sac under the liver; stores bile.
Term
glucose
Definition
Simple sugar.
Term
glycogen
Definition
Starch; glucose is stored in this form in liver cells.
Term
hydrochloric acid
Definition
Substance produced by the stomach; necessary for digestion of food.
Term
ileum
Definition
Third part of the small intestine.
Term
incisor
Definition
One of four front teeth in the dental arch.
Term
insulin
Definition
Hormone produced by the endocrine cells of the pancreas. It transports sugar from the blood into cells and stimulates glycogen formation by the liver.
Term
jejunum
Definition
Second part of the small intestine.
Term
lipase
Definition
Pancreatic enzyme necessary to digest fats.
Term
liver
Definition
A large organ located in the RUQ of the abdomen. Secretes bile; stores sugar, iron, and vitamins; produces blood proteins; and destroys worn-out red blood cells; weighs about 2.5-3 pounds.
Term
lower esophageal sphincter (LES)
Definition
Ring of muscles between the esophagus and the stomach. AKA cardiac sphincter.
Term
mastication
Definition
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