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Control and Coordination
Draw the structure of a neuron and explain its function.
Our nervous system consists of nerve cells that transmit impulses from nerve cells to the different parts of the body. The nerve cells are also called neurons and they are the functional unit of our nervous system.
Parts of the Nerve cell:
(a) Cell body
Dendrite - Dendrite is a finger-like projection that receives the nerve impulses and transmits it into the cell body and then to the axon.
Synapse – The gap between the nerve ending of the axon of one neuron and the dendrite of other neurons is called a synapse.
The nerve impulse travel from one neuron to another neuron in the following manner:
The receptors present at the tip of the dendrite of nerve cells collect the information as a chemical reaction. These chemical reactions create an electric impulse. These impulses travel from the dendrite to the cell body, axon, and then to the end of the axon. The chemical is released at the end of the axon and crosses the synapse and sends the same electric impulse to the dendrite of the next neuron. In the same manner, the impulse is transferred from nerve cells to the muscles cells.
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