Digestive system Flashcards Preview

Biology > Digestive system > Flashcards

Flashcards in Digestive system Deck (16):
1

Pancreatic Lipase

The major fat-digesting enzyme of the body

2

Bile

Produced in the liver
Stored in the gall bladder
Contains bile salts, phospholipids, cholesterol, and bile pigments such as bilirubin
Assists lipase in the digestion of fats
Dumped into the small intestine upon the arrival of food

3

Bile salts

Contained in bile
Help digest fat by emulsifying fat into small droplets contained in water

4

Pancreatic Amylase

Enzyme that continues that digestion of carbohydrates into simpler sugars

5

Trypsin

Works with chymotrypsin to handle the digestion of peptides in the human diet
Cuts peptide bonds next to arginine and lysine

6

Chymotrypsin

Works wit trypsin to handle the digestion of peptides in the human diet
Cuts peptide bonds by phenylalanine, tryptophan and tyrosine

7

Exopeptidases

Enzymes that complete the digestion of proteins by hydrolyzing all the amino acids of the remaining fragments not digested by trypsin or chymotrypsin

8

Three Main Parts of the Large Intestine

Ascending colon, Transverse colon and Descending colon

9

Two main functions of the colon

Reabsorbs water used in the digestive process
Excretes salts when their concentration in the blood is too high

10

Brush Border

Composed of a large amount of microvilli and increases the surface area of the small intestine to improve absorptive effiency

11

Small Intestine Walls

Are arranged in folds and ridge, which have more waving structures called villi
Had brush border

12

Pyloric Sphincter

Passageway between the stomach and the small intestine

13

Creation of Pepsin

Glands in the stomach secrete pepsinogen-the precursor to pepsin
Pepsinogen is activated into pepsin by HCl

14

Pepsin

Major enzyme of the stomach, which breaks proteins down into smaller polypeptides to be handled by the intestines

15

Esophageal Sphincter

Valve that is usually closed to prevent food from returning back up the esophagus to the mouth

16

Salivary Amylase

Breaks down the starches in our diet into simpler sugars like maltose, which are digested further down in the intestines