Absorption of digested food occurs mainly in:

Explanation

In vertebrates absorption occurs mostly in the small intestine, although some absorption occurs in the stomach and large intestine also. The absorptive cells of the lining of the alimentary canal have two main features; .they have numerous mitochondria, ER, and Golgi bodies, they are brush bordered with fine microvilli at their end. Microvilli increase the surface area for absorption. Absorption involves three major mechanisms, namely passive absorption, active absorption, and Hulk transfer. Passive absorption is the energy-independent transport of substances in concentration and electrochemical gradient. Active absorption is the energy-dependent and carrier- mediated transport of substances across plasma-membranes.