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saltatory conduction
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is faster than conduction on an unmyelinated axon.
muscle spindles
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are bundles of small, specialized skeletal muscle fibers
The phrenic nerves arise from the
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cervical plexuses
Which of the following is a function of the efferent division of the nervous system?
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sending signals to muscles
Head injuries that damage cerebral blood vessels are serious conditions because
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these spaces compress and distort the relatively soft tissues of the brain
The ________ division of the nervous system brings sensory information to the central
nervous system.
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, afferent
When a neuron is at rest, which ion passes through its membrane most easily?
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potassium
The posterior horns of the spinal cord contain
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sensory nuclei
The all-or-none principle states that
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all stimuli great enough to bring the membrane to threshold will produce
identical action potentials.
Which of the following is a descending pathway of the spinal cord?
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