mouth to small intestine, enzymatic, very fast

feed cannot pass back through to esophagus, reason they can't vomit

function of the small intestine

25ft, 32 gal, rate of passage is 24-36 hours

4in in diameter, common site of impaction colic, part of the large colon

cecum to rectum, fermentation, very slow

2-4 Gal., J-shaped, rate of feed passage is 30-12hrs

Duodenum, Jejunum, Ileum

3-4ft, 7-8gal, blind pouch, bacterial fermentation and H2O absorption

10ft, 3-4in in diameter, some H2O absorption

mastication, produces 12L or saliva per day

secretes hydrochloric acids(acidifies contents), pepsin(digestive protein), and gastric lipase(digests fats)

most active sight of digestion

cecum is related to what

primary function of the small colon

50-60in, uses peristalsis

second tight passage where food can't pass back

lining has villi to maximize surface area, and amino acids

10-12ft, 8in in diameter, bacterial fermentation and H2O absorption

final organ in tract, 2-3 days for feed to reach

wave like contractions

50-70ft, 3-4in in diameter, food passes about 12in/min, rate of passage increases with intake

lining cells produce sodium bicarbonate

right ventral, left ventral, right dorsal, left dorsal

1000 pound horse creates...