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Given below is the diagrammatic representation of impulse conduction through an axon.

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Select the option with the incorrect information about impulse conduction at points A and B.

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Important Questions on Neural Control and Coordination

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Biology>Human Physiology>Neural Control and Coordination>Physiology of Nerve Conduction
Select the incorrect statement regarding synapses:
HARD
Biology>Human Physiology>Neural Control and Coordination>Physiology of Nerve Conduction
Explain the plasma membrane of a nerve cell with respect to the maintenance of potential.
EASY
Biology>Human Physiology>Neural Control and Coordination>Physiology of Nerve Conduction
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>Physiology of Nerve Conduction
Resting membrane potential of a neuron is approximately:
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Biology>Human Physiology>Neural Control and Coordination>Physiology of Nerve Conduction
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
EASY
Biology>Human Physiology>Neural Control and Coordination>Physiology of Nerve Conduction
Action potential in neurons is generated by a rapid influx of
EASY
Biology>Human Physiology>Neural Control and Coordination>Physiology of Nerve Conduction
Give an account of synaptic transmission,
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Biology>Human Physiology>Neural Control and Coordination>Physiology of Nerve Conduction
Nissl bodies are mainly composed of
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Biology>Human Physiology>Neural Control and Coordination>Physiology of Nerve Conduction

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>Physiology of Nerve Conduction

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>Physiology of Nerve Conduction

The correct pathway of conduction of impulses through a neuron is :

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Biology>Human Physiology>Neural Control and Coordination>Physiology of Nerve Conduction
Stimulation of a muscle fiber by a motor neuron occurs at:
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Biology>Human Physiology>Neural Control and Coordination>Physiology of Nerve Conduction
Receptor sites for neurotransmitters are present on
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Biology>Human Physiology>Neural Control and Coordination>Physiology of Nerve Conduction
Concentration of Na+ ions outside a nerve cell is ~ 100 times more than inside. The concentration of K+ ions is more inside the cells. The levels of Na+ ions and K+ ions are maintained by:
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Biology>Human Physiology>Neural Control and Coordination>Physiology of Nerve Conduction
The transport of which neutrotransmitter is interfered by cocaine?
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Biology>Human Physiology>Neural Control and Coordination>Physiology of Nerve Conduction
Neurotransmitter released at the neuromuscular junction of a voluntary muscles is:
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Biology>Human Physiology>Neural Control and Coordination>Physiology of Nerve Conduction
Which of the following is secreted at the ends of an axon?
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Biology>Human Physiology>Neural Control and Coordination>Physiology of Nerve Conduction
Give an account of synaptic transmission.
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Biology>Human Physiology>Neural Control and Coordination>Physiology of Nerve Conduction

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>Physiology of Nerve Conduction
Which one of the following ion pairs is involved in nerve impulses?