Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
|
|
|
1.
|
Which
of the following statements about the resting potential of a neuron is true? a. | There are many
times more sodium ions outside the neuron than inside. | b. | Sodium ions are
in balance inside and outside the neuron. | c. | There are fewer potassium ions inside the neuron than
outside. | d. | There are equal amounts of potassium and sodium ions inside and
outside the neuron. | | |
|
|
|
|
|
|
2.
|
Refer
to the illustration above. Structure B in the diagram is the a. | spinal
cord. | c. | cerebellum. | b. | brain stem. | d. | cerebrum. | | | | |
|
|
|
3.
|
How
many lobes are there in the brain?
|
|
|
4.
|
The
layer of photoreceptors and neurons at the back of the eye is called the a. | retina. | c. | iris. | b. | cochlea. | d. | optic nerve. | | | | |
|
|
|
5.
|
The
effects of alcohol on the human body include a. | changes to the cell membrane of nerve
cells. | b. | altered transmission of nerve
signals. | c. | impaired coordination. | d. | All of the
above | | |
|