Stomach (17)

Question 1

How long is the fundus stored?

Answer 1

1 hour

Question 2

Peristaltic waves occur how often?

Answer 2

every 15-25 seconds

Question 3

What does HCl do in chemical digestion?

Answer 3

denatures proteins, kills microbes

Question 4

What does pepsinogen do in chemical digestion?

Answer 4

activated by HCl – protects against autodigestion

Question 5

What does pepsin do for chemical digestion?

Answer 5

digests proteins (very active in low pH areas of stomach)

Question 6

Does gastric lipase have a large role in the stomach?

Answer 6

No, limited role

Question 7

Absorption in the stomach is limited too

Answer 7

H2O, ions, alcohol, drugs

Question 8

Alpha cells

Answer 8

endocrine, secrete glucagon

Question 9

Beta cells

Answer 9

endocrine, secrete insulin

Question 10

Acini cells

Answer 10

exocrine, secrete pancreatic juice

Question 11

Pancreatic juice contains… (3)

Answer 11

water, enzymes & sodium bicarbonate

Question 12

Pancreatic amylase breaks down

Answer 12

starch

Question 13

Pancreatic lipase breaks down

Answer 13

triglycerides

Question 14

Proteases break down

Answer 14

protein

Question 15

Trypsinogen is activated by

Answer 15

enterokinase

Question 16

Once trypsinogen is activated it forms

Answer 16

trypsin

Question 17

Trypsin role

Answer 17

activate the other enzymes

Question 18

Trypsin activates other enzymes such as

Answer 18

– chymotrypsinogen becomes chymotrypsin
– procarboxypeptidase becomes carboxypeptidase
– proelastase becomes elastase

Question 19

Ribonuclease

Answer 19

digest RNA into nucleic acids

Question 20

Deoxyribonuclease

Answer 20

digest DNA into nucleic acids