Digestive system

Question 1

Name the 5 cell types in the gastric glands of the stomach (M S P C E )

Answer 1

-mucous neck cells
-stem cells
-parietal (oxyntic) cells
-chief cells
-enteroendocrine cells

Question 2

Describe stem cells

Answer 2

specialised cells that differentiate-divide and give rise to other cell types

Question 3

Describe mucous neck cells

Answer 3

secrete when stimulated by vagus nerve

Question 4

Describe parietal (oxyntic) cells

Answer 4

secrete HCl & intrinsic factor [B12] & grehlin

Question 5

Describe chief cells

Answer 5

pepsinogen, gastric lipase

Question 6

Describe enteroendocrine cells

Answer 6

histamine, serotonin, somatostatin & gastrin

Question 7

Describe the large intestine. Structure and resulting function.

Answer 7

specialised to:
-absorb water and electrolytes
-form and store faeces
-support beneficial bacteria

mucosa lined with:
- simple columnar epithelium with absorptive cells
-high density of mucus-secreting goblet cells