describe the structure and function of the ruminant stomach
Answers
Ruminant Physiology and Function. The digestive tract is composed of the mouth, tongue, teeth, esophagus, stomach, small and large intestines. A ruminant stomach is comprised of four compartments the rumen, reticulum, omasum and abomasum
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Answer:
Answer
The wall of the stomach has gastric glands which secrete gastric juice. This gastric juice contains- mucus, hydrochloric acid and protease or protein-digesting enzyme, pepsin.
Role of Hydrochloric Acid:
It makes the medium of gastric juice acidic so that the enzyme pepsin can digest the food properly.
Pepsin can work only in an acidic medium if acidic pH is not provided, then the pepsin remains inactive.
It kills any bacteria which may enter into the stomach with food.
Role of Mucus:
=> Mucus forms a protective lining on the inner wall of the stomach. It means it protects the wall of the stomach from the corrosive effect of hydrochloric acid and proteolytic nature of pepsin. The wall of the stomach is also made of proteins, but it is not digested by pepsin because pepsin is screted in an inactive form. It becomes active in the presence of HC1, secreted when there is food in the stomach.
=> When there is no food, there is no secretion of pepsin and secondly, there is a protective coating of mucus over the stomach wall.
=> Mucus lubricates the food and gives it semi-solid texture.
Role of Pepsin: Pepsin acts on proteins and converts them into simpler peptide molecules.