They have more mitochondria
contraction of muscle with secretion of substance
Muscle
smooth muscle pushes food through the intestine and smooth muscle is a involuntary muscle
Protein builds muscle carbohydrates release energy
Ileocecal valve
it contracts rhythmically
d. The intestine
smooth musclesmooth muscle
They use glucose to release energy using respiration.
intestine, and stomach
fermentation
small because it has more villi