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प्रश्न
With the help of a suitable diagram describe the structures of a neuron.
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उत्तर
Nervous system consists of special cells called nerve cells or neurons. It has a main cell body called cyton. It gives out many processes called dendrites. From it a very long process is given out. It is called axon or nerve fibre.

The cell body has a nucleus. The dendrites get the message from the organs and send this message to the axon through the cell body. Then the axon sends the message to muscles to contrast or to the gland for secretion.
The neurons make contact with one another through their processes. The axon at its end branches and meets the dendrites of another neuron. The meeting point is called synapse. The message is passed on from one axon to the dendrites of another neuron. How the message goes ? It is like this:
Organ → Message goes to dnedrites → Cell body → Axon → Muscles or glands
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संबंधित प्रश्न
Distinguish between Cranial nerves and spinal nerves.
The number of Spinal nerves in a human being are :
(A) 31 pairs
(B) 10 pairs
(C) 21 pairs
(D) 30 pairs
Mention the exact location of Epididymis
Fill in the blank:
The neurons carrying impulses from the brain to the muscles are called _______________________.
Answer the following questions briefly:
How are the cytons and axons placed in the brain and the spinal cord?
Name the following:
The third neuron that is involved in reflexes, other than simple reflex.
___________ nervous system prepares us for the fight or flight responses.
During synaptic transmission of nerve impulse, neurotransmitter (P) is released from synaptic vesicles by the action of ions (Q). Choose the correct P and Q.
Which cells form a single layer of squamous or columnar often ciliated epithelial cells lining the ventricle?
______ is the gap between the axon of one terminal neuron and the dendrites of next neuron.
