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Saltatory conduction occurs in unmyelinated axons.

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Important Questions on Neural Control and Coordination

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Biology>Human Physiology>Neural Control and Coordination>Generation and Conduction and Transmission of Nerve Impulse
Action potential in neurons is generated by a rapid influx of
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Biology>Human Physiology>Neural Control and Coordination>Generation and Conduction and Transmission of Nerve Impulse
Which one of the following ion pairs is involved in nerve impulses?
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Biology>Human Physiology>Neural Control and Coordination>Generation and Conduction and Transmission of Nerve Impulse
Each neuron has a cell body, axon, and dendrites. The dendrites are the protoplasmic extensions of the nerve cell. The axodendritic type of chemical synapse is formed by the association between the axon terminal of the pre-synaptic neuron and the dendrites of a post-synaptic neuron. The action potential causes the fusion of the synaptic vesicle to release the neurotransmitters for neurotransmission. Select the correct option from the following.
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Biology>Human Physiology>Neural Control and Coordination>Generation and Conduction and Transmission of Nerve Impulse
Select the incorrect statement regarding synapses:
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Biology>Human Physiology>Neural Control and Coordination>Generation and Conduction and Transmission of Nerve Impulse

Assertion (A): Impulse transmission across electrical synapse is always faster than that of chemical synapse.

Reason (R): In electrical synapse, pre and post synaptic membranes are in very close proximity and have links called gap functions.

The correct option among the following is

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Biology>Human Physiology>Neural Control and Coordination>Generation and Conduction and Transmission of Nerve Impulse
Explain the plasma membrane of a nerve cell with respect to the maintenance of potential.
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Biology>Human Physiology>Neural Control and Coordination>Generation and Conduction and Transmission of Nerve Impulse
Give an account of synaptic transmission,
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Biology>Human Physiology>Neural Control and Coordination>Generation and Conduction and Transmission of Nerve Impulse

Identify A, B, C and D in the following graph regarding nerve impulse transmission.

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Biology>Human Physiology>Neural Control and Coordination>Generation and Conduction and Transmission of Nerve Impulse

Assertion (A): In myelinated nerve fibres, action potentials are conducted at a faster rate.

Reason (R): The myelin present between nodes of Ranvier has concentrated Na and K voltage-gated channels.

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Biology>Human Physiology>Neural Control and Coordination>Generation and Conduction and Transmission of Nerve Impulse
Give an account of synaptic transmission.
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Biology>Human Physiology>Neural Control and Coordination>Generation and Conduction and Transmission of Nerve Impulse
When 'A' stands for Axon, 'D' for Dendrites, 'S' for Synapse and 'B' for Cell body, a typical sequence of structures between a receptor and an efferent is
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Biology>Human Physiology>Neural Control and Coordination>Generation and Conduction and Transmission of Nerve Impulse
Stimulation of a muscle fiber by a motor neuron occurs at:
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Biology>Human Physiology>Neural Control and Coordination>Generation and Conduction and Transmission of Nerve Impulse
At the neuromuscular junction:
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Biology>Human Physiology>Neural Control and Coordination>Generation and Conduction and Transmission of Nerve Impulse
Which of the following factor is responsible for resting membrane potential'?
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Biology>Human Physiology>Neural Control and Coordination>Generation and Conduction and Transmission of Nerve Impulse
Unidirectional transmission of a nerve impulse through nerve fibre is due to the fact that
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Biology>Human Physiology>Neural Control and Coordination>Generation and Conduction and Transmission of Nerve Impulse
With respect to the sodium-potassium pump, what changes will be observed when one molecule of ATP is used during the process?
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Biology>Human Physiology>Neural Control and Coordination>Generation and Conduction and Transmission of Nerve Impulse
During the transmission of nerve impulse through a nerve fibre, the potential on the innerside of the plasma membrane has which type of electric charge?
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Biology>Human Physiology>Neural Control and Coordination>Generation and Conduction and Transmission of Nerve Impulse
Chemical transmission of nerve impulses from one neuron to another at a synapse is by :-
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Biology>Human Physiology>Neural Control and Coordination>Generation and Conduction and Transmission of Nerve Impulse
For quick coordination, our neural system is organised through
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Biology>Human Physiology>Neural Control and Coordination>Generation and Conduction and Transmission of Nerve Impulse
During repolarisation of nerve