Chapter 25:
Nervous Control
Practice Test
1.
Which of these is an example of a reflex?
a.
frowning when you are concentrating on a task
b.
smiling when someone tells a joke
c.
walking faster when you are in a hurry
d.
blinking when an object is thrown at your face
Hint
2.
What cells transmit outgoing impulses to effectors?
a.
ganglia
b.
interneurons
c.
motor neurons
d.
sensory neurons
Hint
3.
What are cells that are specialized for conducting nerve impulses?
a.
rods
b.
cones
c.
ganglia
d.
neurons
Hint
4.
What effect do stimulants such as the caffeine in coffee have on the nervous control system?
a.
They increase the activity of the nervous system.
b.
They have no effect on the nervous system.
c.
They decrease the activity of the nervous system.
d.
They result in stimuli that do not reach the threshold level of intensity.
Hint
5.
What is the small, fluid-filled space between each neuron along a nerve pathway?
a.
a vacuole
b.
a synapse
c.
a duct
d.
a node
Hint
6.
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.
neurotransmitter
d.
action potential
Hint
7.
In which direction does an axon carry impulses?
a.
away from the cell body of the neuron
b.
away from the end brush
c.
towards the dendrites
d.
towards the cell body of the neuron
Hint
8.
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
9.
What control system is made up of sympathetic and parasympathetic nerves?
a.
the autonomic system
b.
the central nervous system
c.
the sensory-somatic system
d.
the sense organs
Hint
10.
What are chemicals that transmit nerve impulses across the synapse?
a.
neurotransmitters
b.
receptor molecules
c.
threshold chemicals
d.
hormones
Hint
