Digestive System

Question 1

What are the 8 functions of the digestive system?

Answer 1

1. Ingestion
2. Mastication
3. Propulsion (deglutition and peristalsis)
4. Mass movement
5. Secretion
6. Digestion
7. Absorption
8. Elimination

Question 2

What are the 2 organ types of the digestive system?

Answer 2

Alimentary Canal (GI Tract) The one way canal that runs from mouth to anus that directly digests ingested food

Accessory Organs are organs with secretory, endocrine and assistive functions that assist in digestion but do not directly touch ingested food

Question 3

Define the following

Mastication, deglutition and peristalsis

Answer 3

Mastication - chewing
Deglutition - swallowing
Peristalsis - wave like contractions and relaxation of the alimentary canal organs that help move and digest food

Question 3

List the organs of the digestive system

Answer 3

Mouth, pharynx, esophagus, stomach, small intestine, large intestine, liver, pancreas, gallbladder

Question 3

What are the 3 phases of digestive regulation

Answer 3

Cephalic - Regulated by the Vagus nerve. Signals sent to the stomach and fed back to the brain for smell, taste, appetite etc.
Gastric -
Intestinal -

Question 4

List the cells of the stomach

Answer 4

Parietal cells - Secretion of HCl
Chief cells - Secrete inactive pepsin as pepsinogen
Enteroendocrine cells - Secrete hormones