Overview

Question 1

At striated ducts:

1. which ions are reabsorbed?
2. which ions are secreted?

Answer 1

1. Na+ and Cl-

2. K+ and HCO3-

Question 2

what is the parasympathetic innervations for the:

1. parotid gland
2. sublingual gland
3. submandibular gland

Answer 2

1. glossopharyngeal
2. facial
3. facial

Question 3

what type of acini is most present in:

1. parotid glands
2. sublingual glands
3. submandibular glands

Answer 3

1. serous
2. mucus
3. both

Question 4

what is the volume of:

1. empty stomach
2. max. full stomach

Answer 4

1. 50ml

2. 1.5L

Question 5

where do peristaltic waves begin and where are they most powerful?

Answer 5

1. gastric body

2. gastric antrum

Question 6

what can increase and decrease the strength of peristaltic contractions?

Answer 6

Increase:
- gastrin & gastric distension

Decrease:

• duodenal distension, low pH in duodenum lume, increased duodenal osmlarity
• increased sympathetic action
• decreased parasympathetic action

Question 7

what do these cells secrete:

1. parietal
2. chief
3. enteroendocrine / G cells
4. D cells
5. enterochromaffin

Answer 7

1. HCl & intrinsic factor
2. pepsinogen & gastric lipase
3. gastrin
4. somatostatin
5. histamine

Question 8

what cells secrete these substances:

1. HCl & intrinsic factor
2. pepsinogen & gastric lipase
3. gastrin
4. somatostatin
5. histamine

Answer 8

1. parietal
2. chief
3. enteroendocrine / G cells
4. D cells
5. enterochromaffin