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20 Cards in this Set
- Front
- Back
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There are 41 pairs of cranial nerves. T or F
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False
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The Vagus is the only cranial nerve to extend below the neck. T or F
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True
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The dorsal ramus consists of only motor fibers. T or F
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False
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Dermatomes are skin segments related to sensory innervation regions of spinal nerves. T or F
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True
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Which is NOT a branch of the trigeminal nerve?
maxillary opthalmic cervical mandibular |
Cervical
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The 3 primary levels of neural integration in a sensory system include all but which one?
receptor level, circuit level, effector level, perceptual level |
Effector level
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The Abducen nerve supplies what?
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The lateral rectus muscle.
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Which is the correct number of pairs of spinal nerves?
7 cervical 12 thoracic 6 lumbar |
12 thoracic
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what causes muscle relaxation and lengthening in response to muscle contraction
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Golgi tendon reflex
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What detects temperature, pressure, and pain
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exteroceptors
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what detects potentially damaging stimuli?
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noci receptors
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which kind of receptor adapts most slowly?
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Noci receptors
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nerves that carry impulses toward the CNS only are called
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afferent
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Right arm is grabbed and the left arm reflexively extends - what is this called?
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crossed extensor reflex
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if the ventral root of a spinal nerve is cut, what would happen?
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a complete loss of voluntary movement
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Which system has short preganglionic and long post-ganglionic fibers?
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sympathetic system
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Which system causes an increase in blood pressure - sympathetic or para?
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sympathetic
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which system causes a decrease in heart rate?
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parasympathetic
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which system is active after a meal?
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parasympathetic
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In contrast to the somatic nervous system, the autonomic nervous system has ___ ______ _______
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2 efferent neurons
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