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प्रश्न
Draw a labelled diagram of the following:
Neuron
उत्तर
APPEARS IN
संबंधित प्रश्न
Distinguish between Cranial nerves and spinal nerves.
Receptor, Spinal cord, Effector, Motor neuron, Sensory neuron.
Briefly explain the following terms: Synapse
Differentiate between Spinal nerves and Cranial nerves (number of nerves).
Fill in the blank:
Basic structural unit of the nervous system is the________.
Differentiate between following pair with reference to the aspect in bracket.
Sensory nerve and motor nerve (direction of impulse carried)
Write the function of synapse.
Identify the ODD term in each set and name the CATEGORY to which the remaining three belong :
Axon, Dendron, Photon, Cyton
Define the following:
Axon
Write whether the following is true or false:
Neurotransmitters are either broken down or reabsorbed after they have conducted an impulse.
‘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?
Assertion: Impulse travels from dendrite to cell body and then along the axon to its end.
Reason: Information acquired at the end of the dendrite tip of a nerve cell sets of an electric impulse.
Junction between two neurons is called ____________.
The mammalian nervous system uses both electrical and chemical means to send signal via neurons. Which part of the neuron receives impulses?
Write one word for the following:
wave of electrical disturbance that sweeps over the nerve cell.
Rearrange the following in correct sequence pertaining to what is given within brackets at the end.
Axon endings - Dendrites - Axon - Perikaryon - Dendron (Neuron structur)
Define the following term:
Nerve
Define the following term:
Synaptic cleft
Give reason:
Neurotransmitters are broken down by an enzyme just after passing an impulse from one neuron to the other.
