Glencoe Biology

Section 1: Structure of the Nervous System

Self-Check Quizzes

1
A (an) ____ carries 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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