Question

what is nervous tissue? and it functions and and it forms and also give its all parts. and pictures also with and name in diagram.

Answer 1

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Nervous tissue control and integrated the activities of various parts of the body. nervous tissue has two main characteristic — CONDUCTION and INTEGRATION. it occurs in the brain, spinal cord and the nerves.

the nervous tissue is formed of the nerve cells and nerve fibers.

✦ NEURONS OR NERVE CELLS

Neurons are the longest cells in the body. the prossess two main functions :

✬They perceive stimuli, in the from of nerve impulses.
✬They conduct nerve, impulses from sense organs to brain and from brain to body's motor organs.

A neurons has following parts: CYTON and NEURITES.

✬ CYTON or cell body is star-shaped. Its cytoplasm is called neuroplasm, and has a large nucleus, several NISSL GRANULES and fine, thread-like neurofibrils.

➜ FUNCTION ····

◉ Nerve fibers conduct message from one part of the body to the other.

◉Impulses or message from brain and spinal cord are carried to various body organs.

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Answer 2

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✴A tissue which specialised to transmit message in our body is nervous tissue.

✴Brain, spinal cord and nerves are composed of nervous tissue.

✴Nervous tissue contains highly specialised units called Nerve cells or neurons.

✴Neurones have the ability to receive stimuli from within or outside to body and conduct (send) impulses (signals) two different parts of a body.

✴The impulse travels from one uan to another neuron.

✴The neurone has three parts:-

☞Cyton (Cell body) - Cell body contains a central nucleus and cytoplasm.

☞Dendrons or dendrites - These are short fibres which are rising from the cell body and further branching into dendrites.

☞Axon - This is a single long fibre. The axon has an insulating and protective cover of myelin around it (Myelin is made up of fat and proteins).