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CBSE Class 9th Science Notes - Animal Tissues – Nervous Tissue

CBSE Class 9th Science Notes - Animal Tissues – Nervous Tissue

Nervous tissue is the tissue which works in coordinating with the organs of the body by generating impulses.
It is made up of special cells called as neurons.
Each neuron consists of a cell body, which contains a nucleus, cytoplasm, called cyton, and elongated hair-like extensions, called dendrites.
One of the dendrites, called the axon, is very long.  Nervous tissues are found in the brain, spinal cord, and nerves.
1) It consists of cell body which contains central nucleus and cytoplasm from which long thin hair like part arises called dendrons.
2) The axon is a single, long, cylindrical structure that conducts electrical impulses away from neuron’s cell body.
3) The dendrons further branches into dendrites.

The cells of the nervous tissue are highly specialized and the cells of this tissue are called nerve cells or neurons.
The Nervous tissue stimulates and transmits the stimulus very rapidly from one place to another within the body.
The brain, spinal cord, and nerves are composed of the nervous tissue.
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