Question

Roof of third ventricle is

• A. Hypothalamus
• B. Epithalamus
• C. Corpus striatum
• D. Pallium

Answer 1

The correct option is B Epithalamus

The diocoel is the 3rd ventricle that is located in the diencephalon which is made up of the thalamus, epithalamus and hypothalamus. The thalamus is laterally present along the 3rd ventricle. The two halves of the thalamus form the lateral walls while the epithalamus forms the roof of the third ventricle. The hypothalamus is present anteroinferior, that is it forms the floor of the 3rd ventricle. Apart from the hypothalamus, the mammillary body, infundibulum and the tectum of the midbrain also forms the floor of the third ventricle.

Hence, the correct answer is 'Epithalamus'