Action potentials are conducted more rapidly when transmission isa. from node to node on a myelinated axon.b. on a small diameter axon.c. on an unmyelinated axon.d. from internode to internode.e. from internode to node on a myelinated axon.
from node to node on a myelinated axon.
a. From node to node on a myelinated axon.
Myelination is the process of adding a fatty sheath around an axon, which acts as an insulator and allows for faster transmission of signals. When an action potential is transmitted from node to node on a myelinated axon (known as saltatory conduction), it allows for very rapid transmission of signals along the axon. In comparison, on an unmyelinated axon, the action potential must travel along the entire length of the axon, which can slow down transmission. Additionally, small diameter axons transmit signals more slowly than larger diameter axons due to differences in resistance and capacitance along the axon.
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