What happens during the oral phase of digestion?

Types of teeth in human -

Rationale: Human teeth are thecodont, meaning they are embedded in sockets of the jawbone.

Excess amino acids are deaminated & converted into urea in -

Rationale: The liver deaminates excess amino acids and converts them into urea.

Pancreatic acinar cells, the following is true except:

A. Contain basal basophilic striations
B. Have receptors for cholecystokinin (secreted by enteroendocrine cells in intestine)
C. Have receptors for cholecystokinin acetyl choline (for autonomic control)
D. Secrete pepsinogen enzyme for protein digestion

Rationale: Pancreatic acinar cells secrete digestive enzymes like amylase and lipase, not pepsinogen, which is from gastric chief cells.

Zymogen cells of fundic glands show the following EXCEPT:

Rationale: Zymogen (chief) cells are located in the body and base of fundic glands, not the neck, and secrete pepsinogen and gastric lipase.

Large, insoluble molecules have to be digested before they can be

Rationale: Large molecules must be broken down into smaller, soluble units before they can be absorbed across the intestinal lining.

Questions About The Digestive System