Question

The gap between two myelin sheath is known as
(a)Nodes of Ranvier
(b)Synaptic cleft
(c)Schwann cells
(d)Synaptic knob
(d)Neural plate

Answer 1

Hint: These are the openings between Schwann cell's myelin insulation that insulate the neuron axon. The interruptions in the myelin sheath were first noticed in 1878 by Louis-Antoine Ranvier, a French histologist, and pathologist, who first identified the nodes as constrictions.

Complete answer:
-Ranvier nodes are microscopic openings within myelinated axons that are located. Their function is to speed up the propagation by saltatory conduction of action potential along.
-Overall, myelination is a highly specific property of axons and ensures that impulses pass through the
the autonomic nervous system at a sufficiently high speed so that the body can generate a good response.
-The Ranvier nodes are the openings between Schwann cells' myelin insulation that insulate the neuron axon.

Additional Information:
 -The distance of 1-2 micrometers between the glial cells of the myelin sheath is the Ranvier node.
-These glial cells are called Schwann cells, and they help to insulate the neuron electrically. The Ranvier nodes are only present when the myelinated axon of a neuron is present.
-Myelination enables an increased rate of transmission of action potential due to" jumping "action potential between Ranvier Nodes.
-Only at the Ranvier node will the movement of sodium ions to depolarize the membrane occur, since the sodium voltage-gated channels are found only at the Ranvier node.
-The myelin sheath's Schwann cells block sodium ion movement elsewhere along the axon.
-The gaps are abundant in ion channels, such as the channels of sodium and calcium ions, resulting in a maximized speed of release of ion mediators into tissues and neurons adjacent to them.
So, the correct answer is ‘Nodes of Ranvier’.

Note: -In the synaptic cleft (the region between a pre and a postsynaptic neuron), this is especially useful because the faster sodium ions are released into the cell, the faster depolarization will occur and the faster response is generated as a result of the potential for action that is induced.