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Multiple Choice
Which ruminant stomach is considered the 'true' stomach?
A
Abomasum
B
Rumen
C
Reticulum
D
Omasum
Verified step by step guidance
1
Step 1: Understand the anatomy of the ruminant stomach, which consists of four compartments: the rumen, reticulum, omasum, and abomasum.
Step 2: Recognize that the term 'true stomach' refers to the compartment that functions similarly to the monogastric stomach, where enzymatic digestion of food occurs.
Step 3: Learn the roles of each compartment: the rumen is for fermentation, the reticulum aids in mixing and filtering, the omasum absorbs water and nutrients, and the abomasum is responsible for enzymatic digestion.
Step 4: Identify that the abomasum is the 'true stomach' because it secretes gastric juices containing enzymes like pepsin and hydrochloric acid, which break down proteins.
Step 5: Confirm that the abomasum is analogous to the stomach in non-ruminant animals, making it the correct answer to the question.