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प्रश्न
Which of the following statements is wrong regarding conduction of nerve impulse?
पर्याय
In a resting neuron, the axonal membrane is more permeable to K+ ions and nearly impermeable to Na+ ions.
Fluid outside the axon has a high concentration of Na+ ions and low concentration of K+, in a resting neuron.
Ionic gradient s are maintained by Na+ K+ pumps across the resting membrane, which transport 3Na ions outwards for 2K+ into the cell.
A neuron is polarized only when the outer surface of the axonal membrane possess a negative a charge and its inner surface is positively charged.
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उत्तर
A neuron is polarized only when the outer surface of the axonal membrane possess a negative a charge and its inner surface is positively charged.
संबंधित प्रश्न
Draw a labelled diagram of the following:
Neuron
Mention the exact location of the Myelin sheath
The diagram given below is a representation of a certain phenomenon pertaining to the nervous system. Study the diagram and answer the following questions:
(i) Name the phenomenon which is being depicted.
(ii) Give the technical term for the point of contact between the two nerve cells.
(iii) Name the parts 1, 2, 3, and 4.
(iv) Write the functions of parts 5 and 6
(v) How does the arrangement of neurons in the spinal cord differ from that of the brain?
Rearrange the following in correct sequence pertaining to what is given within brackets at the end.
Repolarisation - Depolarisation - Resting (polarised) (during conduction of nerve impulse through a nerve fibre)
Name the following:
The nerve which carry impulse from CNS to muscles.
At the end of repolarization, the nerve membrane gets hyperpolarized. Why?
Axons ____________.
Identify the INCORRECT statement regarding multipolar neuron.
Which part of a nerve cell contains a nucleus?
Any factor that can bring a change in the body of an organism is called ______.
