Question

Observe the following and find out the related parts of brain:
I. Foramen ovale
II. Foramen Manro
III. Foramen magnum
IV. Ductus Sylvius
V. Ductus arteriosus
VI. Metacoel

• A. I, II, V
• B. I, III, V
• C. II, IV, VI
• D. II, III, VI

Hint:

Foramen of Monro and Aqueduct of Sylvius are classical ventricular landmarks — memorise their roles.
If options include an out-of-place term, double-check the question for typos.

Answer 1

The Correct Option is C

• **Foramen of Monro (Foramen Manro)** — this is the interventricular foramen connecting lateral ventricles to the third ventricle (brain structure) — corresponds to II.
• **Ductus (Aqueduct) of Sylvius** — the cerebral aqueduct connecting the third and fourth ventricles — a brain/ventricular structure — corresponds to IV.
• **Metacoel** is a term sometimes used in comparative anatomy for body cavity divisions (not a standard brain structure) — its inclusion makes the option set ambiguous.
• **Foramen ovale** and **foramen magnum** are skull foramina (openings in the skull) rather than intrinsic brain cavities; **ductus arteriosus** is a cardiac fetal vessel.
• Because only II and IV clearly refer to intracranial ventricular structures, none of the choices list just II & IV — the closest provided choice is (3) which adds VI (Metacoel) and therefore the question as printed is ambiguous.
• Best possible pick from the given options: (3) II, IV, VI with the note that VI is not a typical brain part and the question appears imprecise.