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Pre-Test
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1
A major difference between axons and dendrites is that axons
A)are found in the central nervous system, while dendrites are found in the peripheral nervous system.
B)carry messages away from the nerve cell body, while dendrites carry messages toward the nerve cell body.
C)are parts of motor neurons, while dendrites are found exclusively on sensory neurons.
D)function in initiating the action, while dendrites function in maintaining the action.
2
At the base of the brain where the spinal cord enters the skull is a portion of the brain known as the
A)medulla oblongata.
B)cerebellum.
C)pons.
D)cerebrum.
3
Cells that receive endocrine messages typically respond in which of the following ways?
A)These cells release products that have been previously manufactured.
B)These cells may begin to synthesize new molecules.
C)These cells may divide and grow.
D)All of the above.
4
Which of the following statement(s) is/are true?
A)The sense organs detect changes in the environment.
B)The brain is responsible for perception of the environmental stimulus.
C)All cells have chemical receptors that bind to stimuli molecules.
D)All of the above.
5
In the eye, the rods are
A)more sensitive to light than cones.
B)able to sense color.
C)found only in the fovea centralis.
D)All of the above are correct.







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