BRAIN
SPINAL CORD
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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grey handles muscle movement; white relays messages between brain and body
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grey handles voluntary movements; white handles involuntary movements
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grey handles muscle movements; white handles higher-level thought
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grey is made of brain cells; white is made of bone cells
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Detailed explanation-1: -The grey matter creates a hornlike structure throughout the inside of the spinal cord while the white matter makes up the surrounding sections of the spinal cord. The grey matter does extend to the spinal cord to make signaling more effective.
Detailed explanation-2: -The CNS has a characteristic tissue arrangement called grey matter and white matter. Grey matter contains the cell bodies (perikarya) of neurons and the supporting cells (neuroglia) as well as unmyelinated dendrites. White matter does not contain any cell bodies, but mostly contains myelinated nerve fibres.
Detailed explanation-3: -What is the difference between gray matter and white matter? Gray matter does not contain mylein sheath over the axon. White matter has a myelin sheath covering.
Detailed explanation-4: -White matter: composed of bundles of axons. These axons are coated with myelin, a mixture of proteins and lipids, that helps conduct nerve signals and protect the axons. White matter conducts, processes, and send nerve signals up and down the spinal cord.