What is the reason for the unidirectional transmission of nerve impulses through a synapse?
- ANerve fibers are covered by a myelin sheath.
- BSodium pumps operate in the cell body and continue in the axon.
- CNeurotransmitters are released by dendrites and not by axon terminals.
- DNeurotransmitters are released by axon terminals and not by dendrites.
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Similar Questions
Which of the following is secreted at the ends of nerve fibres?
Easy
View SolutionArrange the following events in proper sequence during impulse transmission across a chemical synapse:
$(a)$ Fusion of synaptic vesicles with the cell membrane of the presynaptic neuron.
$(b)$ $Ca^{++}$ channels open and $Ca^{++}$ diffuses into the synaptic knob from the extracellular fluid.
$(c)$ Neurotransmitter binds with receptors of the postsynaptic cell.
$(d)$ Release of neurotransmitter by exocytosis.
$(a)$ Fusion of synaptic vesicles with the cell membrane of the presynaptic neuron.
$(b)$ $Ca^{++}$ channels open and $Ca^{++}$ diffuses into the synaptic knob from the extracellular fluid.
$(c)$ Neurotransmitter binds with receptors of the postsynaptic cell.
$(d)$ Release of neurotransmitter by exocytosis.
The venom of a cobra affects the $........$ system.
Medium
View SolutionElectrical synapse shows following features $EXCEPT$ . . . . . . .
In the neural system,a chemical synapse shows a synaptic gap of about . . . . . . .
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