GI (digestive) system

Ingestion

putting food in mouth, chewing, swalllowing

Digestion

breaking large molecules into smaller molecules physically and chemically

protein > amino acids

sugars > glucose

fatty acids > triglycerides

Absorption

food goes from intestinal membrane to blood circulation which takes nutrients to the liver

Elimination

unabsorbed and undigested food exits the body via stool

Pharynx

these muscles in addition to tongue and roof of mouth allow for swallowing

epiglottis stops food from entering into larynx and therefore into lungs

Peristalsis

movements that move food down into stomach

lower esophageal sphincter

maintains pressure to prevent stomach content from refluxing back up

3 parts of the stomach

fundus: broad portion near esophagus

body: central portion

Pylorus (antrum): lower, narrow section that joins w/ small intestine