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25 Cards in this Set
- Front
- Back
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What 3 types of nerves does the peripheral nervous system (PNS) contain?
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1. cranial
2. spinal 3. autonomic nerves |
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How many pairs of cranial nerves are there?
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12
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How many types of spinal nerves are there?
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31
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Of the 3 types of nerves, which type are the most directly involved in speech, language and hearing?
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cranial nerves
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Who do the cranial nerves receive much of their innervations from?
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corticobulbar tract (of the PNS)
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Where do the cranial nerves exit through?
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Foramina, or holes, in the base of the skull.
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What type of nerves carry sensory information from a sense organ to the brain?
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Sensory Nerves
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What type of nerves carry impulses from the brain to the muscles to make those muscles move?
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Motor Nerves
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Which five cranial nerves are not concerned with speech, language, or hearing?
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I, II, III, IV, and VI
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What cranial nerves are involved with speech, language and hearing?
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V and VII-XII
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What is another name for Cranial nerve V?
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Trigeminal nerve
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What will damage to cranial nerve V result in?
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Inability to close the mouth, difficulty in chewing, and trigeminal neuralogia (sharp pain in the facial area)
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What is another name for Cranial nerve VII?
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Facial nerve
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What kind of appearance would a person with damage to the facial nerve have?
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Usually a masklike appearance with minial or no facial expression
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What is another name for Cranial nerve VIII?
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Acoustic (or vestibulocochlear) nerve
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What is CN VIII for?
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Balance and hearing
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What would damage to the vestibular branch of the acoustic nerve result in?
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hearing loss, problems with balance, or both
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What is another name for Cranial nerve IX?
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Glossopharyngeal nerve
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What would lesions of the glossopharyngeal nerve do?
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Create difficulty in swallowing, unilateral loss of the gag reflex, and loss of taste and sensation from the posterior third of the tongue
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What is another name for Cranial nerve X?
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The vagus nerve
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What does the vagus nerve contain?
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motor, sensory, and autonomic fibers
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Why is the vagus nerve called "wandering nerve"?
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Because it extends into the chest and the stomach
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What does damage to the vagus nerve do?
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A variety of sequelae such as difficulty swallowing, paralysis of the velum, and voice problems if RLN is damaged
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What is another name for Cranial nerve XI?
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The spinal accessory nerve
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What do lesions of the spinal accessory nerve result in?
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Neck weakness, paralysis of the sternocleidomastoid, and consequent inability to turn the head, as well as an inability to shrug the shoulders or raise the arm above shoulder level
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