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प्रश्न
Our body contains a large number of cells ‘L’ which are the longest cells in the body. L has long and short branches called ‘M’ and ‘N’ respectively. There is a gap ‘O’ between two ‘L’ cells, through which nerve impulse transfer by the release of chemical substance ‘P’.
(i) Name the cells L?
(ii) What are M and N?
(iii) What is the gap O?
(iv) Name the chemical substance P?
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उत्तर
- Neuron
- Axon and Dendrites
- Synaptic Junction (knob)
- Neurotransmitter (Acetylcholine)
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संबंधित प्रश्न
Mention the exact location of Epididymis
Differentiate between the following pair of terms:
Motor nerve and sensory nerve.
Fill in the blank:
The neurons carrying impulses from the brain to the muscles are called _______________________.
State whether the following statement is true (T) or false (F):
Each neuron consists of three parts called cell body, cyton and axon.
How does an impulse travel across a synapse?
Differentiate between:
Rods and Cones.
Classify neurons based on their structure.
‘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?
Name the following:
Three main parts of the neuron
Distinguish between the following pair:
Nerve impulse and flow of electricity (transmission and speed)
