Author Question: Synaptic communication between two neurons usually occurs via ____. a. direct contact b. ... (Read 126 times)

gonzo233 · **on:** Jun 19, 2018

Synaptic communication between two neurons usually occurs via ____.

a. direct contact
b. molecular transduction
c. chemical messengers
d. electrical signaling

Question 2

Professor Freeman calls on his student Maya to describe how the presence of myelin affects an action potential. Maya should respond with which of the following statements?

a. Current flows along the unmyelinated segments and action potentials propagate along the myelinated portions of the axon, decreasing the speed and efficiency of the action potential
b. Current flows under the myelin and action potentials propagate along the unmyelinated segments of the axon, decreasing the speed and efficiency of the action potential
c. Current flows along the unmyelinated segments and action potentials propagate along the myelinated portions of the axon, increasing the speed and efficiency of the action potential
d. Current flows under the myelin and action potentials propagate along the unmyelinated segments of the axon, increasing the speed and efficiency of the action potential