Chapter 25:
Nervous Control
Practice Test
1.
What is the flow of ions and the changes in polarity caused by a stimulus to a neuron called?
a.
resting potential
b.
synapse
c.
action potential
d.
neurotransmitter
Hint
2.
In vertebrates, the central nervous system consists of a(n) _______ and one or more nerve cords.
a.
nerve net
b.
ganglion
c.
brain
d.
interneuron
Hint
3.
What body system is closely related to the nervous control system?
a.
the respiratory system
b.
the circulatory system
c.
the digestive system
d.
the endocrine system
Hint
4.
A stimulus must have a certain intensity to cause a change in polarity in the beginning of the axon. What is this level of intensity called?
a.
the threshold
b.
the reflex arc
c.
the synapse
d.
the resting potential
Hint
5.
What control system is made up of sympathetic and parasympathetic nerves?
a.
the sense organs
b.
the sensory-somatic system
c.
the autonomic system
d.
the central nervous system
Hint
6.
What effect do stimulants such as the caffeine in coffee have on the nervous control system?
a.
They decrease the activity of the nervous system.
b.
They increase the activity of the nervous system.
c.
They result in stimuli that do not reach the threshold level of intensity.
d.
They have no effect on the nervous system.
Hint
7.
What is the difference in electrical charge between the inside and outside of a neuron at rest called?
a.
synapse
b.
neurotransmitter
c.
action potential
d.
resting potential
Hint
8.
What is the small, fluid-filled space between each neuron along a nerve pathway?
a.
a vacuole
b.
a duct
c.
a node
d.
a synapse
Hint
9.
What is the motor area of the human brain?
a.
the pons
b.
the cerebellum
c.
the midbrain
d.
the cerebrum
Hint
10.
In which direction does an axon carry impulses?
a.
towards the dendrites
b.
away from the end brush
c.
away from the cell body of the neuron
d.
towards the cell body of the neuron
Hint
