BIOLOGICAL BASES OF BEHAVIOR
BIOLOGICAL PSYCHOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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synapses which transmit signals
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gaps in the axon which speed up the impulse to jump across the gaps
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gaps in the myelin sheath allow this increase in speed by forcing the impulses to ‘jump’ across the gaps along the length of the axon
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slow down the force
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Detailed explanation-1: -Nodes of Ranvier are microscopic gaps found within myelinated axons. Their function is to speed up propagation of action potentials along the axon via saltatory conduction . The Nodes of Ranvier are the gaps between the myelin insulation of Schwann cells which insulate the axon of neuron.
Detailed explanation-2: -Because the myelin sheath is largely composed of an insulating fatty substance, the nodes of Ranvier allow the generation of a fast electrical impulse along the axon. This rapid rate of conduction is called saltatory conduction.
Detailed explanation-3: -Action potentials travel down the axon by jumping from one node to the next. Nodes of Ranvier are gaps in the myelin along the axons; they contain sodium and potassium ion channels, allowing the action potential to travel quickly down the axon by jumping from one node to the next.
Detailed explanation-4: -Each gap in the myelin sheath-between internodes-is called the nodes of Ranvier. The nodes of Ranvier are rich in positive sodium ions. As the electrical signal or impulse travels along the axon, it jumps from one node to the next.