AP BIOLOGY

Detailed explanation-1: -The function of the omasum is incompletely understood; however, the omasum plays an important role in the transport of appropriately sized feed particles from the reticulorumen to the abomasum, esophageal groove closure, fermentation of ingesta, and absorption of water, volatile fatty acids, and minerals.

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: -Omasum. The globe-shaped omasum is nicknamed “manyplies” because of its internal structure. It is lined with large leaves and folds of tissue that resemble the pages of a book. These folds absorb water and nutrients from feed that passes through after its second round of chewing.

Detailed explanation-4: -Water absorption occurs in the omasum. Cattle have a highly developed, large omasum. Interior lining of the omasum, revealing the “many piles” tissue folds in an 8-week-old calf. The abomasum is the “true stomach” of a ruminant.

Detailed explanation-5: -These folds increase the surface area, which increases the area that absorbs nutrients from the feed and water. Water absorption occurs in the omasum. Cattle have a highly developed, large omasum. The abomasum is the “true stomach” of a ruminant.