HUMAN NUTRITION

Detailed explanation-1: -The omasum is the third chamber in the ruminant stomach. It lies within the intrathoracic part of the abdomen so cannot be palpated manually. Instead it is examined by ausculation. The omasum has biphasic contractions which squeeze fluid out of the food before allowing the ingesta to continue into the abomasum .

Detailed explanation-2: -The rumen contracts, forcing some of this well-chewed food into the second stomach, or reticulum. From there it passes to the omasum (third stomach), where water is extracted. It then enters the true, or fourth, stomach, the abomasum, where gastric juices (containing hydrochloric acid) are added to the food.

Detailed explanation-3: -In the third compartment, the omasum, food is further broken down and filtered. All the water is also absorbed out of the food in the omasum. Finally, the food reaches the fourth and final compartment, the abomasum, which is sometimes called the “true stomach” because it most closely resembles the human stomach.

Detailed explanation-4: -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.

Detailed explanation-5: -The third compartment of the ruminant stomach is the omasum. The internal wall is in the form of deep, thin folds like the pages of a book. This appearance accounts for the popular name for the omasum, which is ‘bible.