Chapter 36:
The Nervous System
Practice Test
1.
What is the function of the myelin sheath of a neuron?
a.
It stimulates the release of neurotransmitters into the synaptic space.
b.
It controls the sodium/potassium pump.
c.
It receives impulses and carries them toward the cell body.
d.
It insulates the axon and increases the speed at which nerve impulses can travel.
Hint
2.
In which portion of the ear would you find the malleus, the incus and the stapes?
a.
the inner ear
b.
the semicircular canals
c.
the middle ear
d.
the outer ear
Hint
3.
Which portion of a neuron receives messages to begin a neuron stimulation?
a.
the dendrites
b.
the cell body
c.
the axon
d.
the nucleus
Hint
4.
Which of the following is an example of a reflex arc?
a.
walking across the room
b.
jerking your hand away from a sharp tack poking you
c.
studying for a biology exam
d.
kicking a soccer ball across a field
Hint
5.
Which type of nerve carries impulses away from the brain to skeletal muscles?
a.
motor
b.
association
c.
neuronal
d.
sensory
Hint
6.
What is the state of charges in an excited neuron?
a.
The outside of the neuron has no charge.
b.
The inside of the neuron has a negative charge.
c.
The outside of the neuron has a negative charge.
d.
The inside of the neuron has no charge.
Hint
7.
Where does the lateral half of the right eye project on the retina?
a.
onto the lateral half of the retina
b.
onto the medial half of the retina
c.
onto the center of the retina
d.
onto the top half of the retina
Hint
8.
Fluid moves the hair cells, which send a signal to the brain for hearing. In which structure do these hair cells reside?
a.
the cochlea
b.
the stapes
c.
the semicircular canal
d.
the tympanic membrane
Hint
9.
What is the all-or-none principle as it pertains to neurons?
a.
A wave of depolarization can pass down a neuron only when it reaches a threshold level.
b.
The sodiumpotassium active transport pump works only when a stimulation reaches a threshold level.
c.
Sodium channels open only when a stimulation reaches a threshold level.
d.
Neurotransmitter release is either none or maximum release.
Hint
10.
What type of drug is alcohol?
a.
a depressant
b.
a narcotic
c.
a stimulant
d.
an analgesic
Hint
11.
What is the function of neurotransmitters?
a.
to pump a chemical into a neuron to initiate a neuron transmission
b.
to secrete a chemical that activates a sodium/potassium pump
c.
to release a chemical that activates the taste bud
d.
to bind to receptor sites on dendrites to initiate nerve impulses
Hint
12.
Where is the cornea found?
a.
on the front surface of the eye
b.
on top of the retina
c.
underneath the sclera
d.
inside the optic nerve
Hint
13.
What is the function of the sympathetic nervous system?
a.
to coordinate skeletal muscle contraction
b.
to interpret visual stimulation
c.
to prepare the body for times of stress or rapid action
d.
to constantly secrete hormones
Hint
14.
Which portion of the brain controls your senses?
a.
the midbrain
b.
the cerebellum
c.
the cerebrum
d.
the medulla oblongata
Hint
15.
Which vision cells are adapted for low-level light, especially at night?
a.
cortex cells
b.
cone cells
c.
rod cells
d.
thalamic cells
Hint
