1. Quiz: The Neuron
1. The skeletal muscles are controlled by the
brain stem
autonomic nervous system
somatic nervous system
cerebellum
2. What is the function of the oligodendrocytes?
create myelin layer
clean up cellular debris
supply blood and nutrients
alert the body to an infection
3. The cells that make up the nervous system are called:
glial
neurons
myelins
terminals
4. What ions are necessary for a nerve impulse to occur?
carbon and sodium
oxygen and carbon
potassium and sodium
hydrogen and potassium
5. Gaps between the myelin sheath along an axon are called:
dendrites
chromatophilic substance
astrocytes
nodes of ranvier
6. Which cell connects neurons to blood vessels?
astrocyte
2. oligodendrocyte
glial
myelin
7. The chemical that moves from the axon of one neuron across a gap to the
dendrite of another is a(n):
gray matter
theshold stimulant
sodium
neurotransmitter
8. White matter appears white due to:
no blood supply
myelin
lack of nuclei
electrical charges
9. A threshold stimulus results in the creation of a(n):
wave
node of ranvier
neurotransmitter
action potential
10. Reflexes (such as the knee-jerk reflex) occur when impulses travel from
the muscle to the ____ and then back to the muscle.
brain
spinal cord
dendrite
axon
