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Physiology of Secretions

General Introduction

Saliva – 1.5 L/day

Gastric Juices – 1-3.0 L/day

Pancreas

Phase

Stimulus

Mediators

Outcome

Cephalic

Taste, smell, chewing and swallowing of food

ACh (vagal)

Enzymes

Gastric

Gastric distension

ACh (vagal)

Enzymes

Intestinal

Acid in duodenum, fat, peptides, and amino acids

Secretin, CCK, Ach

Enzymes and fluid (HCO3-)