Cranial Nerves – Flashcards

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what is the I cranial nerve
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olfactory
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what is the II cranial nerve
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optic
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what is the III cranial nerve
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oculomotor
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what is the IV cranial nerve
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trochlear
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what is the V cranial nerve
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trigeminal
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what is the VI cranial nerve
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abducens
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what is the VII cranial nerve
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facial
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what is the VIII cranial nerve
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vestibulocochlear
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what is the IX cranial nerve
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glossopharyngeal
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what is the X cranial nerve
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vagus
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what is the XI cranial nerve
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accessory
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what is the XII cranial nerve
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hypoglossal
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Does the Olfactory nerve have sensory or motor function? what is the function?
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visceral sensory smell
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does the Optic nerve have sensory or motor function? what is the function?
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somatic sensory vision
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does the Oculomotor nerve have sensory or motor function?
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somatic motor visceral motor
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what is the somatic motor function in the Oculomotor nerve
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movement of eyes
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what is the visceral motor function in the Oculomotor nerve
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controls lens constricts pupil
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does the trochlear nerve have sensory or motor function
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somatic motor
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what is the somatic motor function of the Trochlear nerve
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innervates superior oblique eye movement
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does the trigeminal nerve have sensory or motor function
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general somatic sensory somatic motor
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what is the largest cranial nerve that has 3 divisions which pass through different foramens of the skull
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trigeminal
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what is the general somatic sensory function of the trigeminal nerve
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innervates the face
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what is the somatic motor function of the trigeminal nerve
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contracts muscles to chew
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does the abducens nerve have sensory or motor function
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somatic motor
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what is the somatic motor function of the abducens hint: names because it abducts the eye
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innervates lateral rectus
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does the facial nerve have sensory or motor function
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general somatic sensory general visceral sensory somatic motor visceral motor
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what is the somatic motor function of the facial nerve five major branches 1) temporal 2) zygomatic 3) buccal 4) mandibular 5) cervical
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innervates facial muscles
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what is the visceral motor function of the facial nerve
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innervates glands
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what is the general visceral sensory function of the facial nerve makes up 2/3 of the anterior tongue
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taste
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what is the general somatic sensory function of the facial nerve
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small patch of skin on the ear
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does the vestibulocochlear nerve have sensory or motor function?
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somatic sensory some somatic motor
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what is the somatic sensory function of the vestibulocochlear nerve
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hearing equilibrium
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does the glossopharyngeal nerve have sensory or motor function?
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general somatic sensory general visceral sensory special visceral sensory somatic motor visceral motor
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what is the special visceral sensory function of the glossopharyngeal nerve makes up 1/3 of the posterior tongue
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taste
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what is the general visceral sensory function of the glossopharyngeal nerve
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resperation blood pressure
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what is the general somatic sensory function of the glossopharyngeal nerve
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small patch of skin on external ear
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what is the somatic motor function of the glossopharyngeal nerve
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innervates pharynx swallowing
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what is the visceral motor function of the glossopharyngeal nerve
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innervates salivary glands
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does the vagus nerve have sensory or motor function
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general somatic sensory general visceral sensory somatic motor visceral motor
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does the accessory nerve have sensory or motor function
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somatic motor
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does the hypoglossal nerve have sensory or motor function
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somatic motor
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what is the general visceral sensory function of the vagus nerve
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thoracic and abdominal viscera respiration blood pressure
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what is the special visceral sensory function of the vagus nerve
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taste buds on epiglottis
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what is the general somatic sensory function of the vagus nerve
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small patch of skin on external ear
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what is the somatic motor function of the vagus nerve
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innervates skeletal muscle of pharynx swallowing
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what is the visceral motor function of the vagus nerve
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innervates heart, lungs, abdomin
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what is the somatic motor function of the accessory nerve hint: DOES NOT RISE FROM BRAIN STEM
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innervates trapezius and sternocleidomastoid muscles
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what is the somatic motor function of the hypoglossal nerve hint: helps to speak
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innervates muscles of the tongue
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origin: arise from a series of roots from the ventral medulla oblongata
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hypoglossal
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Pathway: exit the skull through the hypoglossal canal and travels to the tongue
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hypoglossal
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origin: forms from ventral rootlets arising from C1-C5 of the spinal cord. Long considered to have both a cranial and a spinal portion, cranial rootlets have been shown to be part of the vagus nerves
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accessory
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pathway: spinal rootlets merge to form the nerves, pass into the skull through the foramen magnum and exit the skull through the jugular foramen
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accessory nerve
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origin: fibers emerge from medulla oblongata
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vagus
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pathway: fibers exit the skull through the jugular foramen and descend through the neck into the thorax and abdomen
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vagus
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origin: fibers emerge from the medulla oblongata
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glossopharyngeal
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pathway: fibers pass through the jugular foramen and travel to the pharynx
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glossopharyngeal
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origin: fibers emerge from the pons, just lateral to abducens
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facial
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origin: sensory receptors in the inner ear for hearing and equilibrium
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vestibulocochlear
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pathway: fibers enter the temporal bone via the internal acoustic meatus and branch off to innervate the two salivary glands and tongue
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facial
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pathway: from the inner ear cavity within the temporal bone, fibers pass through the internal acoustic meatus merge to form the nerve and enter the brain stem at the pons
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vestibulocochlear
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origin: in the inferior pons
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abducens
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pathway: pass through the superior orbital fissure to enter the orbit
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abducens
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origin: sensory receptors in the skin of face
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trigeminal
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pathway: through the skull: 1) superior orbital fissure 2) foramen rotundum 3) foramen ovale mandibular foramen cutaneous branch: 1) supraorbital foramen 2) infraorbital forament 3) mental forament
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trigeminal
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origin: in the dorsal midbrain
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trochlear
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pathway: pass ventrally around the midbrain pass through the superior orbital fissure to enter the orbit
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trochlear
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origin: ventral midbrain
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oculomotor
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pathway: pass through the superior orbital fissure to enter orbit innervate the iris and ciliary muscle
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oculomotor
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origin: nasal cavity
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olfactory
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pathway: pass through the CRIBRIFORM foramina of the ethmoid bone to synapse the bulb
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olfactory
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origin: retina of the eye
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optic
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pathway: pass through the optic canal of the sphenoid bone
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optic
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which cranial nerves are involved in innervating the eye? a) oculomotor b) abducens c) trochlear d) oculomotor and abducens only e) all of the above
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all of the above
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Which cranial nerve(s) is/are transmitted through the jugular foramina of the skull? a) accessory b) glossopharyngeal c) hypoglossal d) accessory and glossopharyngeal e) All of the listed responses are correct.
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accessory an dglossopharyngeal
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which answer choice correctly identifies functions of the hypoglossal nerve a) food mixing and manipulation by the tongue; somatic motor fibers to the trapezius muscle b) tongue movements during speech and swallowing c) innervation of skeletal muscles of the pharynx; parasympathetic innervation to pupil constrictor muscles d) special sensory fibers carry information about taste; parasympathetic fibers control tear production from the lacrimal gland
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tongue movements during speech and swallowing
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branches of the ______ cranial nerve are desensitized when a dentist gives a shot of Novocain which prevents pain impulse transmission from the teeth and gums
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trigeminal
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the ______ nerve transmits afferent impulses for the special senses of hearing and balance
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vestibulocochlear
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through which hole in the skull do the glossopharyngeal, vagus and accessory nerves pass? a) foramen ovale b) internal acoustic meatus c) foramen magnum d) jugular foramen
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jugular foramen
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which nerves innervate muscles that move the eye a) Cranial nerves IV,V,VI b) Cranial nerves III,IV,VI c) cranial nerves II,III,IV d) cranial nerves II and III
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cranial nerves III,IV,VI
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All except which two cranial nerves attach to the brain at the brainstem a) glossopharyngeal and hypoglossal nerves b) trigeminal and vagus nerves c) olfactory and optic nerves d) oculomotor and trochlear nerves
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olfactory and optic nerves
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which cranial nerves pass through the internal acoustic meatus a) facial and vestibulocochlear nerves b) vestibulocochlear nerve and branches of trigeminal nerve c) glossopharyngeal, vagus, and accessory nerves d) oculomotor, trochlear, and abducens nerves
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facial and vestibulocochlear
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what do cranial nerves I, II, and VII have in common a) they all transmit gustatory (taste) impulses b) they all transmit special sensory impulses c) they all transmit general somatic motor impulses d) they all transmit visceral motor impulses
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they all transmit special sensory impulses
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the _______ nerve is the only cranial nerve to innervate structures of the thoracic cavity and abdomen
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vagus
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paralysis or damage to the trochlear nerve results in __________ a) the eyeball turning medially when at rest b) diminished ability to swallow c) double vision and reduced ability to rotate the eye inferolaterally d) diminished ability to speak e) loss of sympathetic motor innervation to the heart, lungs, and abdominal viscera
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double vision and reduced ability to rotate the eye inferolaterally
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if your patient had problems tasting on the anterior two thirds of his tongue, you would suspect damage to the _______ nerve
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facial
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the ______ nerve transmits parasympathetic visceromotor impulses to the parotid salivary gland and relays sensory impulses from chemoreceptors in the carotid body
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glossopharyngeal
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the oculomotor nerve _____ a) directs somatic motor impulses to the superior oblique muscle b) rotates the eye inferolaterally c) directs somatic motor axons to four of the six extrinsic eye muscles and also transmits parasympathetic visceromotor impulses to pupillar constrictor muscle of the eye d) direct somatic motor impulses to the lateral rectus muscles and relays proprioceptive impulses from the same muscle to the brain e) directs visual impulses to the primary visual cortex
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directs somatic motor axons to four of the six extrinsic eye muscles and also transmits parasympathetic visceromotor impulses to pupillar constrictor muscle of the eye
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Identify ALL of the cranial nerves that transmit gustatory (taste) impulses a) trigeminal and facial b) hypoglossal, glossopharyngeal, and vagus c) trigeminal and hypoglossal d) only facial and glossopharyngeal e) facial, glossopharyngeal, and vagus
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facial, glossopharyngeal, and vagus
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cranial nerves III, VII, IX, and X a) are primarily or exclusively motor nerves that are comprised of somatic motor axons to skeletal muscles of the eye, neck, and tongue b) each contain general visceral motor axons and are characterized as nerves of the parasympathetic division of the autonomic nervous system
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each contain general visceral motor axons and are characterized as nerves of the parasympathetic division of the autonomic nervous system
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which type of fibers are found in the hypoglossal nerve a) sensor and motor to the entire tongue b) motor to the muscles of the tongue c) sensory from the anterior 2/3 of the tongue; motor to extrinsic muscles of the tongue d) motor to the intrinsic muscles of the tongue
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motor to the muscles of the tongue
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which cranial nerve, along with the abducens and oculomotor nerves, has somatic motor fibers that pass through the superior orbital fissure
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IV
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which cranial nerve pair has two sensory branches which both pass through the internal acoustic meatus
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VIII
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which nerve, along with XI and XII relays only somatic motor impulses
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IV
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which cranial nerve pair is characterized by somatic sensory fibers crossing at the ventral midline of the brain
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II
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which cranial nerve pair along with nerve III has fibers that pass through the superior orbital fissure
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IV
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which cranial nerve pair, similar to cranial nerve II, runs through a canal that bears the same name
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XII
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damage to which cranial nerve pair can cause difficulties in speech and swallowing
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XII
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damage to which cranial nerve pair can cause deafness and problems with equilibrium
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VIII
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which cranial nerve pair has three major branches, the maxillary, mandibular, and ophthalmic divisions LARGEST IN DIAMETER
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V
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which cranial nerve pair along with the vagus and glossopharyngeal nerves, exits through the jugular foramen
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XI
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damage to which cranial nerve pair may result in anosmia
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I
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cranial nerve that provides innervation to one of the extrinsic eye muscles
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trochlear
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what is the only cranial nerve that has fibers that enter and leave the skull through different foramen
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XI
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which cranial nerves have fibers that relay somatic motor impulses to pharyngeal muscles during swallowing a) IX and X b) V and XII c) I and II d) VI and VII
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IX and X
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a person that cannot blink or smile could have damage to this nerve
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VII
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cranial nerve pair is comprised of ventral rootlets from C1-C5
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accessory
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