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FN 235 ch 3
Digestion and absorption
11
Nutrition
Undergraduate 3
02/05/2014

Additional Nutrition Flashcards

 


 

Cards

Term
GI Tract
Definition

Accessory organs

-Salivary glands, liver, pancreas, gallbladder

Functions

-Ingestion

-Transport

-Secretion

-Absorption

-Movement

-Elimination

 

Term
Bile Synthesis & Storage
Definition

LIVER: produces bile

GALLBLADDER: stores and secretes bile

bile is alkaline fluid that aids in digestion

Term
Definition

 

-bile travels from the liver to the gallbladder and then to the small intestine, where it assists digestion.

 

-In the small intestine, most of the bile is reabsorbed and sent back to the liver for reuse.

 

Term
Digestion and Absorption in small intestine
Definition

small intestine digests:carbs, fats, proteins

most absoprtion occurs here

Term
Role of HCL and Pepsin (found in stomach)
Definition

HCL: unfolds protein and stop salivaryamylase action, prepares protein for digestion

PEPSIN: begins protein digestion

Term

Gastrin(in stomach)

&

Secretin

Definition

GASTRIN:hormone

-stimulates gastric secretion and movement

-increases motility in the stomach and stimulates the release of HCl and pepsinogen which promotes protein digestion


SECRETIN: released in the duodenum in response to incoming chyme and reduces gastric secretion and motility, so it has an opposite effect to gastrin

 

Term
Cholecystokinin (CCK) (in GI tract)
Definition

 

is released by cells in the small intestine and stimulates the pancreas to secrete digestive enzymes and the gallbladder to release bile and it slows down gastric emptying

 

Term
Gastric Inhibitory Peptide (GIP) (found in GI tract)
Definition

 

is released by cells in the small intestine in response to fat and glucose and inhibits gastric secretion, motility, and emptying
stimulates the release of insulin

 

Term
Lymphatic System in Fat absorption
Definition
absorbs fat soluble nutrients
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