Question:
Third compartment of compound stomach of ruminants is known as
Third compartment of compound stomach of ruminants is known as
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To remember the sequence of the compound stomach compartments, use the alphabetical-numerical order: Rumen (1st), Reticulum (2nd), Omasum (3rd), Abomasum (4th).
Updated On: Aug 5, 2026
- Abomasum
- Rumen
- Omasum
- Caecum
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept:
Ruminants possess a specialized compound stomach adapted for digesting complex plant materials through microbial fermentation.
This compound stomach is divided into four distinct anatomical compartments.
Step 2: Detailed Explanation:
The path of ingested food through the ruminant stomach follows a specific sequential order:
Rumen (First Compartment): The largest compartment where anaerobic microbial fermentation of cellulose and other complex carbohydrates occurs.
Reticulum (Second Compartment): A honeycomb-like structure that helps sort food particles and works closely with the rumen to facilitate regurgitation during rumination.
Omasum (Third Compartment): A globe-shaped organ with highly folded, leaf-like muscular sheets (often called "manyplies").
Its primary function is to reabsorb water, bicarbonate, and volatile fatty acids (VFAs) from the digesta before it enters the next chamber.
Abomasum (Fourth Compartment): The true glandular stomach, which secretes hydrochloric acid and digestive enzymes to initiate standard enzymatic protein digestion.
The caecum is not a part of the compound stomach; it is a component of the large intestine.
Step 3: Final Answer:
The third compartment of the compound stomach of ruminants is the Omasum.
Ruminants possess a specialized compound stomach adapted for digesting complex plant materials through microbial fermentation.
This compound stomach is divided into four distinct anatomical compartments.
Step 2: Detailed Explanation:
The path of ingested food through the ruminant stomach follows a specific sequential order:
Rumen (First Compartment): The largest compartment where anaerobic microbial fermentation of cellulose and other complex carbohydrates occurs.
Reticulum (Second Compartment): A honeycomb-like structure that helps sort food particles and works closely with the rumen to facilitate regurgitation during rumination.
Omasum (Third Compartment): A globe-shaped organ with highly folded, leaf-like muscular sheets (often called "manyplies").
Its primary function is to reabsorb water, bicarbonate, and volatile fatty acids (VFAs) from the digesta before it enters the next chamber.
Abomasum (Fourth Compartment): The true glandular stomach, which secretes hydrochloric acid and digestive enzymes to initiate standard enzymatic protein digestion.
The caecum is not a part of the compound stomach; it is a component of the large intestine.
Step 3: Final Answer:
The third compartment of the compound stomach of ruminants is the Omasum.
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