Gabi has painstakingly made some neuroscience flashcards to help her study group prepare for an upcoming test.Brent picks up a card."Nodes of Ranvier" is written on the front.Which of the following phrases should he see when he turns over the card?
A) the myelinated portions of an axon
B) the unmyelinated portions of an axon
C) spheres in an axon terminal from which neurotransmitters are released
D) a group of neurons within a neural network

Question

Quizplus · Accepted Answer

Nodes of Ranvier are the small gaps in between the myelinated segments of an axon where there is no myelin sheath. These areas are unmyelinated and play an important role in the propagation of electrical signals along the axon. Therefore, the correct phrase to be seen on the back of the flashcard is "the unmyelinated portions of an axon."

Gabi Has Painstakingly Made Some Neuroscience Flashcards to Help Her