digestive track

• with the salvary glands
• amylase digest starch to glucose
• strepticoxyl- acid

calcium hardens and calcified (plaque)

rings of muscle constrict and elongate to move food

• mechanical digestion
• extremely acidic

• hydrochloric acid
• enzyme pepsin - secreted in active form

emulsified -> digests fats

sliding (rolling) where stomach slides or moves into thoracic cavity

protrusion thru abdominal wall or inguinal

telescoping of intestine

twisting

twinkee” diet of low residue results in saccular                                                                         weakenings of intestinal wall