10 Questions
Which cells secrete mucus in the stomach mucosa?
Mucous neck cells (Goblet)
What is the primary role of chief cells in gastric glands?
Secrete pepsinogen & enzymes
Where does HCl secretion occur in the parietal cells of the gastric glands?
In the lumen of canaliculi
Which cells are responsible for secreting gastrin in the stomach mucosa?
D cells
What is the main function of enterochromaffin like cells in the stomach mucosa?
Secrete histamine
What is the purpose of the Na+-K+ ATPase pump in the gastric secretion?
To recycle K+ ions back into the cell
Which of the following receptors is blocked by atropin?
Muscarinic M3 receptors
What is the primary function of HCl in protein digestion?
To activate pepsinogen to pepsin
What is the optimal pH range for pepsin activity?
pH 1.8-3.5
What is the function of intrinsic factor in the gastric secretion?
To facilitate the absorption of vitamin B12
Learn about the anatomy of gastric glands in the stomach mucosa and the types of cells present in them including mucous neck cells, chief cells, and oxyntic (parietal) cells. Understand the role of each cell type in the secretion of acidic gastric juice.
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