stomach substances/secretions

Saliva (amylase) location and function

Oral cavity & initiates chemical digestion of carbohydrates into maltkse

Mucus (mucin) location and finction

Stomach & intestines, and protects epithelial lining and aids in lubrication/friction reduction

Hydrochloric acid (HCI) location and function

Stomach (parietal cells) & creates acidic environment for protein digestion and activates pepsinogen

Pepsinogen location and funtion

Stomach (chief cells) & activated by HCI to form pepsin, which digests proteins into peptide

Pepsin location and function

Stomach & active enzyme that breaks down proteins

Gastrin location and function

Stomach (endocrine cells) & hormone that stimulates HCI and enzyme secretion

Pancreatic juice location and function

Small intestine (pancrease) & contains enzymes (amylase, lipase) and bicarbonate to digest macronutrients and neutralize acid

Bike location and function

Small intestine (from liver, stored in gallbladder) & emilsifies fats for lipid digestion

Bicarbonate location and function

Small intestine (pancreatic juice) & buffers acidic chime to protect the intestinal lining and optimize enzyme activity