Question

Given below are two statements:
Statement I - The muscularis of intestine can be differentiated into longitudinal and oblique muscles only.
Statement II - The muscularis of stomach is made up of outer- longitudinal, middle oblique and inner circular muscles.
In light of above statements, choose the most appropriate answer from the option given below.

• A. Both statement I and statement II are correct.
• B. Both statement I and statement II are incorrect.
• C. Statement I is correct and statement II is incorrect.
• D. Statement I is incorrect and statement II is correct.

Hint:

Remember layers: Intestine = Circular + Longitudinal
Stomach = Longitudinal + Circular + Oblique (LC-O order)

Answer 1

The Correct Option is B

Concept: The muscularis layer of the alimentary canal is responsible for peristalsis and mixing movements. Its arrangement differs in different parts of the digestive system.
• In most parts (like intestine), muscularis has:
• Inner circular layer
• Outer longitudinal layer
• In stomach, muscularis has three layers:
• Outer longitudinal
• Middle circular
• Inner oblique

Step 1: Analyze Statement I.
It states intestine has longitudinal and oblique muscles. This is incorrect because intestine has circular and longitudinal layers, not oblique. Hence, Statement I is incorrect.

Step 2: Analyze Statement II.
Correct order in stomach is:
• Outer longitudinal
• Middle circular
• Inner oblique But the statement incorrectly gives:
• Outer longitudinal
• Middle oblique
• Inner circular Thus, arrangement is wrong. Hence, Statement II is incorrect.

Step 3: Conclusion.
Both statements are incorrect. Final Answer: Option (B)