*b. myelin sheath
c. cell body or soma
d. presynaptic terminal
36. Jasmine is in her physiology lab practicing labeling a neuron. When she gets to the nodes of
Ranvier, she will be labeling .
a. the spiny outgrowths on dendrites
b. the myelin sheath
c. the swelling at the end of the axon
*d. the gaps in the myelin sheath along the axon
37. Gaps in the insulating material that surrounds axons are known as .
a. interpeduncular nuclei
*b. nodes of Ranvier
c. myelin synapses
d. presynaptic terminals
38. A presynaptic terminal is also known as .
*a. an end bulb
b. a node of Ranvier
c. myelin
d. a spine
39. An axon has many branches, each of which swells at its tip. These are known as .
*a. presynaptic terminals
b. efferent axons
c. afferent axons
d. intrinsic neurons
40. Professor Case studies how drugs of abuse change the amount of chemical that neurons
release from the presynaptic terminal into the .
a. dendritic terminal
*b. junction between neurons
c. afferent space
d. nucleus
41. Neurons typically have one , but many .
a. dendrite; axons