536
Question
Saltatory conduction of impulse occurs in
Saltatory conduction of impulse occurs in
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Solution
The correct option is D Myelinated nerve fibres
The fatty myelin sheath of myelinated nerve fibres prevents the flow ions between external fluid and fluid present within the axon. At the node of Ranvier, the insulating myelin sheath is absent and thus, the ionic flow occurs at these points only. Therefore the action potential jumps from node to node, due to which the transmission of impulse is more rapid in myelinated fibres. This is called the salutatory conduction of nerve impulse.So the correct answer is 'myelinated nerve fibres'.
The fatty myelin sheath of myelinated nerve fibres prevents the flow ions between external fluid and fluid present within the axon. At the node of Ranvier, the insulating myelin sheath is absent and thus, the ionic flow occurs at these points only. Therefore the action potential jumps from node to node, due to which the transmission of impulse is more rapid in myelinated fibres. This is called the salutatory conduction of nerve impulse.
So the correct answer is 'myelinated nerve fibres'.
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