Which compartment of the ruminant stomach is the true stomach with strong acid?

• A. Abomasum
• B. Rumen
• C. Reticulum
• D. Omasum

Answer: (A)

The main concept here is that only one compartment acts like a true, acid-secreting stomach. The abomasum is the glandular, true stomach of a ruminant. It contains gastric glands that produce hydrochloric acid and digestive enzymes, creating a highly acidic environment that denatures proteins and starts enzymatic digestion before the feed moves into the small intestine. The other compartments serve fermentation (rumen), mixing and hardware processing (reticulum), and water absorption and particle reduction (omasum). So, the abomasum is the compartment with strong acid.