Digestion and Excretion Flashcards Preview

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Flashcards in Digestion and Excretion Deck (22):
1

7 parts of digestive tract

Mouth, esophagus, stomach, small intestine, large intestine, rectum, anus

2

3 parts of small intestine

Duodenum, ileum, jejunum

3

4 parts of large intestine

Ascending colon, transverse colon, descending colon, sigmoid colon

4

4 types of stomach cells

Mucous, chief, parietal, G

5

Function of mucous cells

Secrete mucous to lubricate stomach wall

6

Function of chief cells

Secrete pepsinogen

7

Function of parietal cells

Secrete HCl

8

Function of G cells

Secrete gastrin

9

What does pepsinogen do?

Precursor to pepsin, which digests protein

10

What does HCl do?

Diffuses to lumen to lower pH of stomach and raise pH of blood

11

What does gastrin do?

Absorbed into blood and stimulates parietal cells to secrete HCl

12

6 pancreatic enzymes

Trypsin, chymotrypsin, pancreatic amylase, lipase, ribonuclease, deoxyribonuclease

13

What does trypsin and chymotrypsin do?

Degrade proteins into small polypeptides

14

What does pancreatic amylase do?

Hydrolyzes polysaccharides to disaccharides and trisaccharides

15

What does lipase do?

Degrades fat, specifically triglycerides

16

Where is bile produced and stored?

Liver, stored in gall bladder

17

Function of renal corpuscle

Filtration

18

Function of proximal tubule

Reabsorption and secretion

19

Function of loop of Henle

Concentrates solute in medulla

20

Function of distal tubule

Empties into collecting duct

21

Function of collecting duct

Concentrates urine

22

Which loop of Henle is permeable to water

Descending