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Digestive System
TORTORA
29
Biology
Undergraduate 2
04/21/2010

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Term
The end product of carbohydrate digestion...
Definition
Monosaccharides
Term
The end product of proteins digestion...
Definition
amino acids
Term
The end product of lipid digestion...
Definition

monogylcerides

and

fatty acids

Term
The end product of nucleic acids digestion...
Definition
  1. pentose
  2. phosphates
  3. nitrogenous bases
Term
Mechanism for absorption for Sm. intestines
Definition
  1. diffusion
  2. facilitated diffusion
  3. osmosis
  4. active transport
Term
chemicle digestion
Definition
splitting of food molecules into simple substances by hydrolysis with assistance of digestive enzymes
Term
motility
Definition
mechanical process that breaks apart ingested food into small molecules
Term
propulsion
Definition
Movement of food through GI trat due to smooth muscle contraction
Term
Falciform ligament
Definition
attaches the liver to the anterior wall of the abdomen and the diaphram
Term
Layers of Sm. intestines
Definition
  1. serosa
  2. muscularis
  3. submucosa
  4. muscularis mucosae
  5. lamina propria
  6. epithelium
Term
function of liver
Definition
  1. metabolism of lipids, porteins, and carbohydrates
  2. excretion of bilirubin
  3. synthesis of bile salts
  4. activation of vitamin D
Term
Cephalic Digestive Phase
Definition
activated by sight, smell, taste, or thought
Term
Sretchreceptors and chemoreceptors
Definition
trigger flow of gastric juices and peristalsis
Term
Intesinal phase reflex
Definition
inhibits gastric activity
Term
Migration motility complex
Definition
peristalsis in the small intestine
Term

circular folds, vili, and microvili

(small intestine)

Definition
create large surface area for absorption in small intestine
Term
presence of bile salts in small intestines allows...
Definition
long-chain fatty acid and monoglyceride absorption in small intestine
Term
enterokinase
Definition
An active enzyme that splits off part of the trypsinogen to form trypsin
Term
salivary amylase
Definition
an enzyme that initiates carbohydrate digestion in the mouth
Term
pancreatic lipase
Definition
principle triglyceride digesting enzymes in adults
Term
Gastrin
Definition
stimulates the secretion of gastric juices and promotes gasric emptying
Term
Pepsin
Definition
A proteolytic enzyme that is screted by cheif cells in the stomach
Term
secretin
Definition
  • stimulates flow of pancreatic juices
  • rich in bicarbonates
  • decrease gastric secretions
Term
Bile
Definition
Nonenzymatic fat-emulsifying agent
Term
cholecystokinin
Definition
  • causes contraction of gall bladder
  • stimulates production of pancreatic juices
  • rich in digestive enzymes
Term
somatostatin
Definition
inhibites gatrin release
Term
Vasoactive intesinal polypeptide
Definition
  • stimulates secretion of ions and water in intestines
  • inhibites gastric acid secretions
Term
lingual lipase
Definition
  • secreted by glands in the tounge
  • begins breakdown of triglycerides in the stomach
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