Q64 / 200 · MHT CET - Medical 2026 (24 April Shift 1) · Biology
Select the INCORRECT statement regarding cerebrum from the following.
- ACerebral cortex is made up of grey matter and white matter lies inside it.
- BGyri and sulci of cerebral cortex increase surface area of grey matter.
- Correct answerCTwo lateral ventricles are connected to diocoel by the duct of Sylvius.
- DGrey matter shows presence of cell bodies, dendrons and non medullated fibres.
Solution
The cerebral cortex is the outer layer of the cerebrum, composed of grey matter, while the inner part consists of white matter.
The surface of the cerebral cortex is highly folded into ridges called gyri and grooves called sulci, which significantly increase the surface area of the grey matter to accommodate more neurons.
Grey matter primarily contains neuronal cell bodies, dendrites, and non-medullated (unmyelinated) nerve fibres.
The two lateral ventricles (paracoels) of the cerebral hemispheres are connected to the third ventricle (diocoel) of the diencephalon through the Foramen of Monro, not the duct of Sylvius. The duct of Sylvius (cerebral aqueduct or iter) connects the third ventricle to the fourth ventricle.
Thus, the statement regarding the connection of lateral ventricles to the diocoel by the duct of Sylvius is incorrect.
Answer: Two lateral ventricles are connected to diocoel by the duct of Sylvius.
The surface of the cerebral cortex is highly folded into ridges called gyri and grooves called sulci, which significantly increase the surface area of the grey matter to accommodate more neurons.
Grey matter primarily contains neuronal cell bodies, dendrites, and non-medullated (unmyelinated) nerve fibres.
The two lateral ventricles (paracoels) of the cerebral hemispheres are connected to the third ventricle (diocoel) of the diencephalon through the Foramen of Monro, not the duct of Sylvius. The duct of Sylvius (cerebral aqueduct or iter) connects the third ventricle to the fourth ventricle.
Thus, the statement regarding the connection of lateral ventricles to the diocoel by the duct of Sylvius is incorrect.
Answer: Two lateral ventricles are connected to diocoel by the duct of Sylvius.
Hence, the correct answer is option: 'C'.