BRAIN
CRANIAL NERVES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It’s the thin outer layer of gray matter on the surface of the cerebral hemispheres
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It’s the part of the brain that lies inferior and distal to the brainstem
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It’s the band of white matter connecting the left and right hemispheres of the brain
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It’s a small canal that connects the third and fourth ventricles
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Detailed explanation-1: -The grey matter does extend to the spinal cord to make signaling more effective. Unlike the structure of the spinal cord, the grey matter in the brain is present in the outermost layer. The grey matter surrounding the cerebrum is known as the cortex of the brain.
Detailed explanation-2: -The outer layer of the cortex is also known as the white matter due to the presence of neuronal cell bodies. The inner layer is called white matter due to the presence of myelinated axons of the above mentioned neuronal cell bodies.
Detailed explanation-3: -Your cerebral cortex is gray because that section of the nerve lacks the fatty covering material called myelin. White matter in your brain is made up of bundles of axons, the long center section of a nerve cell that’s wrapped in myelin. The myelin gives the tissue its whitish color.
Detailed explanation-4: -…outer layer of the duplicate cerebral hemispheres is composed of a convoluted (wrinkled) outer layer of gray matter, called the cerebral cortex.