EVERYDAY SCIENCE

SCIENCE

NERVOUS SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Grey matter consists of.
A
A large number of neurons
B
A large number of nerve cell bodies
C
A large number of nerve fibres
D
Neuroglia
Explanation: 

Detailed explanation-1: -The grey matter is mainly composed of neuronal cell bodies and unmyelinated axons. Axons are the processes that extend from neuronal cell bodies, carrying signals between those bodies.

Detailed explanation-2: -[4] The grey matter contains the majority of neuron somas, making it appear tan with circulation but grey when prepared for examination outside of the body. These somas are circular structures that house the nucleus of the cells. The grey matter also extends from the brain into the spinal cord.

Detailed explanation-3: -Grey matter is a major component of the central nervous system in our body. They contain neuronal cell bodies, dendrites, unmyelinated axons, glial cells, synapses and capillaries in them.

Detailed explanation-4: -White matter does not contain any cell bodies, but mostly contains myelinated nerve fibres. The central region of the spinal cord is grey matter, and the surrounding region is white matter.

Detailed explanation-5: -Thus, being the center of processing information, the brain has the maximum number of neurons. Since the cell body is a part of a neuron, therefore, it can be concluded that the brain has the largest number of cell bodies.

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