Glencoe Biology

Section 1: Structure of the Nervous System

Self-Check Quizzes

1.
A (an) ____ careis nerve impulses from the cell body to other neurons and muscles.
A)axon
B)dendrite
C)nucleus
D)reflex arc
2.
What are the gaps on the myelin sheath called?
A)axons
B)thresholds
C)nodes
D)cell bodies
3.
What does this figure represent?
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A)a nerve impulse on a myelinated axon
B)potassium diffusing through myelin
C)a non-myelinated nerve impulse
D)a reflex arc
4.
What happens when an action potential is produced with a signal that is stronger than threshold?
A)stronger action potential generated
B)action potential has same strength as threshold
C)weaker action potential generated.
D)no action potential generated
5.
What would be the hypothetical result if a person lacked motor neurons?
A)would be unable to feel a deep cut
B)would be unable to breath
C)would be unable to feel a hot plate
D)would be unable to swing hammer
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