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Saltatory conduction ________. A. occurs at the synapse B. is slower than conduction on an unmyelinated...

Saltatory conduction ________.

A.

occurs at the synapse
B.

is slower than conduction on an unmyelinated axon
C.

occurs only with A type of fiber
D.

occurs along the axon insulated by myelin with nodes
E.

occurs along the axon with continuous myelin sheath
Science   Anatomy-And-Physiology   
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Answer #1

Answer- D occure along the axon insulated with myelin with nodes

Explanation- the axons are myelinated in most of the peripheral and central nervous system.the myelin sheath produced by glial cell helps in insulation of axon and prevent leakage of ion .

These myelinated axons are not continuous rather they have nodes in between them called NODES OF RANVIER . Here the concentration of voltage gated Na ion channel is more.

the action potential moves from one node of ranvier to another along the whole length of axon

This type of movement of action potential is called the Saltatory conduction .

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