Main Menu

Restart

Credits

Back to tutorial

The Cephalic Phase of digestion has now turned on your GI tract, using the first line of communication -- the PARASYMPATHETIC SYSTEM. But now that you're full, the brain isn't so interested any more.

This is the second way the GI tract can communicate -- by releasing HORMONES.

GASTRIN is a hormone that excites the stomach to keep secreting hydrochloric acid, pepsinogen, mucus, and more GASTRIN.

Positive Feedback

Negative Feedback