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Look at figure given below and identify the parts of a neuron.
(i)    Where information is acquired.
(ii)    Through which information travels as an electrical impulse.
(iii)    Where this impulse must be converted into a chemical signal for onward transmission.


(i) Ends of dendrites acquire information.
(ii) Through cell body (cyton) to axon and along axon to axon ends information travels in the form of electric impulse.
(iii) The electrical impulse is converted into a chemical signal at the synapse.

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What is the general scheme of travelling nervous impulses in the body? Express the events briefly by line diagram only.

What is the role of dendrites?

What is the role of axon?

What is cerebrospinal fluid?

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