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