Digestive System: Control of the Digestive System Worksheet Exercise

Digestive System: Control of the Digestive System


1. List the three phases of digestive system processes:

1. CEPHALIC

2. GASTRIC

3. INTESTINAL

2. The VAGUS nerve triggers the responses during the cephalic phase of digestion.

3. List the four main responses during the intestinal phase of digestion:

1. SECRETION OF BICARBONATE

2. SECRETION OF DIGESTIVE ENZYMES

3. RELEASE OF BILE

4. SEGMENTATION CONTRACTIONS OF SMALL INTESTINES

4. The small intestine typically________.

a. slows gastric emptying

b. accelerates gastric emptying

c. has no effect on gastric emptying


5. The VAGUS and PELVIC SPLANCHNIC nerves carry parasympathetic impulses to the enteric nervous

system.

6. Sympathetic NS innervation of the digestive tract is via _______fibers.

a. preganglionic

b. postganglionic


7. All preganglionic ANS fibers release ACh, while only postganglionic fibers of the sympathetic division

release NE.