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प्रश्न
Answer the following questions briefly:
How are the cytons and axons placed in the brain and the spinal cord?
उत्तर
In brain cyton are placed outward and axon bundles internally.
In spiral cord it is reversed.
Grey matter is where neutrons bodies are located. White matter are the region which have axons.
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संबंधित प्रश्न
Given below is the diagram of a neuron. Name the parts numbered 1-5.
Write the function of medullary sheath.
Write whether the following is true or false:
Neurotransmitters are released on activation.
Differentiate between:
A Sensory neuron and a Motor neuron (function)
Brain is a part of _________ nervous system.
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.
‘A’ is a cylindrical structure that begins from the lower end of the medulla and extends downwards. It is enclosed in bony cage ‘B’ and covered by membranes ‘C’. As many as ‘D’ pairs of nerves arise from the structure ‘A’.
(i) What is A?
(ii) Name (a) bony cage ‘B’ and (b) membranes ‘C’
(iii) How much is D?
Write one word for the following:
A bundle of axons enclosed in a tubular sheath.
Distinguish between the following pair:
Nerve impulse and flow of electricity (transmission and speed)
