In which chamber of the four-compartment ruminant stomach does true enzymatic digestion by hydrochloric acid and gastric enzymes take place?
Answer and explanation
Correct answer: A. abomasum
- Step 1: The ruminant stomach consists of rumen, reticulum, omasum, and abomasum. Step 2. The first three chambers house symbiotic fermenting microbes and reabsorb water. Step 3. The fourth chamber, the abomasum, secretes gastric juice (HCl and proteases), functioning as the true glandular stomach. Answer: abomasum (the true stomach). Why not the others: Rumen is fermentation vat; reticulum sorts cud; omasum absorbs water and fatty acids.
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