Which of the following statements best describes saltatory conduction?

a. Every section of the axolemma must be depolarized and triggered to generate an action potential.

b. The internodes must generate action potentials.

c. The dendrites and cell bodies propagate EPSPs toward the trigger zone.

d. Only the nodes of Ranvier must generate action potentials.

Video transcript

Hey, everyone. Let's take a look at this question together, saltatory conduction along the myelinated axon is crucial for what is it? Answer choice, a insulation of the axon. Answer choice B efficient transmission of nerve impulses. Answer choice C processing of proteins in the cell body or answer choice datp production in the axon. Let's work this problem out together to try to figure out which of the following answer choices best explains what saltatory conduction is crucial for. So, in order to solve this question, we have to recall what we have learned about what saltatory conduction is and how it pertains to a myelinated axon, which we know that a myelinated axon is covered with a myelin sheath, which that myelin sheath helps insulate the axon and helps prevent the dissipation of the electrical signal. And we can recall that related to myelinated axons, the action potentials jump from one node of Ranvier to the next which that method of jumping from one node of Ranvier to the next is referred to as saltatory conduction. And that allows for rapid and energy efficient conduction. Therefore, saltatory conduction along the myelinated axon is crucial for efficient transmission of nerve impulses, which is answer choice B since saltatory conduction refers to the action potentials jumping from one node of VA to the next. In that myelinated axon, which is covered in the myelin sheath that has those nodes which allow for rapid and energy efficient conduction and all other answer choices are incorrect. I hope you found this video to be helpful. Thank you and goodbye.