Question

question 13 1 pts the speed of a nerve impulse depends on the neurons resting potential. false true question 14 1 pts what mechanism quickly terminates the action of a neurotransmitter once it binds to its postsynaptic receptor? neurotransmitter molecules are transported back into synaptic knobs. neurotransmitter molecules are transported into nearby glial cells. all of these are correct. neurotransmitter molecules are metabolized into inactive compounds. question 15 1 pts in a myelinated fiber, the action potential jumps from one node of ranvier to the next. false true

Explanation:

• For Question 13: The speed of a nerve - impulse is mainly determined by axon diameter and myelination, not the resting potential.
• For Question 14: Neurotransmitter action can be terminated by reuptake into synaptic knobs, uptake into glial cells, or metabolism into inactive compounds.
• For Question 15: In myelinated fibers, action potentials propagate via saltatory conduction, jumping from one node of Ranvier to the next.

Answer:

Question 13: A. False
Question 14: C. All of these are correct.
Question 15: B. True