AP BIOLOGY

Detailed explanation-1: -Omasum-section that is round and muscular. “Grinds” the food material and prepares the food material for chemical breakdown.

Detailed explanation-2: -The omasum is a globe-shaped structure containing leaves of tissue (like pages in a book). It absorbs water and other substances from digestive contents. Feed material (ingesta) between the leaves will be drier than ingesta found in the other compartments.

Detailed explanation-3: -The laminae are covered in omasal papillae that are claw-like in some ruminants or blunt cones in others. These papillae further increase the surface area but they also provide increased friction against the food particles.

Detailed explanation-4: -Omasum: This compartment, also known as the manyplies, consists of many folds or layers of tissue that grind up feed ingesta and squeeze some of the water from the feed. The capacity of the omasum of goats is approximately 1/4 gallon. Abomasum: This compartment is often considered the true stomach of ruminant animals.

Detailed explanation-5: -The omasum acts as a pump that aspirates ingesta and transfers it to the abomasum. The abomasum behaves similarly to the stomach of a nonruminant. Digestive enzymes in the abomasum are responsible for the next phase of digestion.