Question

Medulla oblongata encloses:

• A. Fourth ventricle
• B. Third ventricle
• C. Second ventricle
• D. Optic lobes

Answer 1

The correct option is A Fourth ventricle

The aqueduct of Sylvius leads to the fourth ventricle, which is enclosed in the pons and medulla oblongata. The medulla has two parts:
1. Open part or superior part, where the dorsal surface of the medulla is formed by the fourth ventricle.
2. Closed part or inferior part, where the fourth ventricle has narrowed at the obex in the caudal medulla and surrounds part of the central canal.