True digestion begins here. Oval, muscular organ that has a thick cornified lining. Gizzard of turkey can crush a walnut. Grit is not necessary. Coarse particles are retained for additional grinding.
Fine particles pass through.
Small Intestine has three sections. Majority of absorption occurs here. Absorbed nutrients may be converted to proper form before transporting by blood and lymphatic systems. Large Intestine Connects Small Intestine with Cloaca. Absorbs water but no nutrients.