PHYSIOLOGY
CENTRAL NERVOUS SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Cell body
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Dendrites
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Axon
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Myelin sheath
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Detailed explanation-1: -An axon is a long, hair-like extension of a nerve cell that carries a message to another nerve cell. Dendrites are thread-like extensions of the cytoplasm of a neuron that receive signals from other neurons.
Detailed explanation-2: -An axon is a long single fiber that transmits messages from the cell body to the dendrites of other neurons or to other body tissues, such as muscles. A protective covering called the myelin sheath, covers most neurons. Myelin insulates the axon and helps nerve signals travel faster and farther.
Detailed explanation-3: -Motor nerves also known as efferent nerves, carry impulses away from the brain or spinal cord to muscles and glands. Sensory nerves also known as afferent nerves, carry impulses from sensory receptors towards the brain.