Question

Read the following statements and select the correct option.
(A). The narrow cavity of diencephalon is called diocoel.
(B). Metacoel is the fourth ventricle within the human brain.
(C). Aqueduct of Sylvius is also called iter.
(D). Foramen of Monro is a opening that connects the third ventricle in the diencephalon with the lateral ventricle in the cerebral hemisphere.
Choose the correct answer from the options given below:

• A. (A), (B), (C) are correct.
• B. (A), (B), (C) and (D) are correct
• C. (C) and (D) are incorrect.
• D. (B), (C) and (D) are correct

Hint:

Check each term against the brain cavities: diocoel, metacoel, iter and foramen of Monro.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept
The brain has fluid-filled cavities called ventricles linked by narrow passages.

Step 2: Check (A) and (B)
The cavity of the diencephalon is the third ventricle, called diocoel. The fourth ventricle in the medulla is the metacoel. Both are true.

Step 3: Check (C) and (D)
The aqueduct of Sylvius (iter) connects the third and fourth ventricles. The foramen of Monro joins the lateral ventricle with the third ventricle. Both are true.

Step 4: Conclusion
All four statements are correct.

Final Answer:
All statements (A), (B), (C) and (D) are correct. \[ \boxed{\text{(B) }\text{(A), (B), (C) and (D) are correct}} \]