DIGESTIVE SYSTEM Gastric secretions and function of each

1.      Parietal cells in the lining of the stomach secrete

a)      Hydrochloric acid only

b)     Hydrochloric acid and intrinsic factor

c)      Pepsinogen

d)     Pepsin

e)      Intrinsic factor only

f)       Vitamin B12

g)      Bile

2.      What of the following stimulates acid secretion in the stomach

a)      Histamine

b)     Acetylcholine

c)      Gastrin

d)     All of them

3.      Intrinsic factor is produced in the ___________ and is necessary for the absorption of ___________.

a)      Duodenum; fat

b)     Liver; amino acids

c)      Stomach; proteins

d)     Stomach; vitamin C

e)      Liver; vitamin B12

f)       Stomach; vitamin B12

g)      Pancreas; vitamin C

h)     Salivary glands; starch

4.      The presence of amino acids, the stomach distension and the vagal stimulation induce Gastrin secretion which in turn increases the gastric acid secretion.

a)      True

b)     False

5.      Pepsinogen is an enzyme that breaks down (digests) proteins

a)      True

b)     False

6.      Sympathetic stimulation___________ the gastric secretions

a)      Increases

b)     Decreases

c)      Has no effect on

7.      Chief cells in the gastric mucosa secrete

a)      Hydrochloric acid

b)     Pepsinogen

c)      Pepsin

d)     Water

e)      Intrinsic factor

f)       Mucus