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74 Cards in this Set
- Front
- Back
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I
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olfactory
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II
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optic
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III
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oculomotor
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IV
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trochlear
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V
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trigeminal
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VI
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abducent
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VII
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facial
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VIII
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vestibulocochlear
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IX
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glossopharyngeal
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X
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vagus
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XI
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accessory
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XII
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hypoglossal
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I (olfactory) mediates
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sense of smell - special somatic sensory
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II (optic) mediates
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vision and pupillary light reflex - special somatic sensory
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I (olfactory) projects to
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telencephalon
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I (olfactory) enters skull through
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crista galli of the cribiform plate of the ethmoid bone
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II (optic) projects to
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diencephalon
paired nerves cross at optic chiasm then project to diencephalon via optic tract |
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III (oculomotor) innervates
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4 of the 6 extraocular muscles derived from somites and levator palpebrae - somatic motor
inferior oblique superior rectus inferior rectus medial rectus levator palpebrae |
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two components of III (oculomotor)
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innervates 4 of 6 oculomotor muscles - somatic motor
cranial parasympathetic outflow pathway - general visceral motor |
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nerves of the cranial outflow pathway:
cranial parasympathetic nerves |
III
VII IX X |
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superior rectus
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extraocular muscle innervated by III
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inferior rectus
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extraocular muscle innervated by III
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medial rectus
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extraocular muscle innervated by III
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inferior oblique
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extraocular muscle innervated by III
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levator palpebrae
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innervated by III
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III (oculomotor) enters skull at
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orbit, through superior orbital fissure
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III (oculomotor) exits brainstem at
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midbrain, anteriorly
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IV (trochlear) innervates
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superior oblique muscle (extraocular) - somatic motor
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IV (trochlear) enters skull at
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orbit, through superior orbital fissure
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IV (trochlear) exits brainstem at
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midbrain, caudal to inferior colliculus
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1st pharyngeal arch
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V (trigeminal)
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divisions of the trigeminal
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V1 - ophthalmic
V2 - maxillary V3 - mandibular |
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V1
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ophthalmic division of the trigeminal
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V2
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maxillary division of the trigeminal
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V3
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mandibular division of the trigeminal
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V1 (ophthalmic division of the trigeminal) mediates
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pain touch temp pressure proprioception - general somatic sensory
face, ear, anterior half of scalp to vertex |
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V2 (maxillary division of the trigeminal) mediates
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sensation from oral and palatial mucosa; nasopharynx - general visceral sensory
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V3 (mandibular division of the trigeminal) innervates
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muscles of mastication
tensors tympani mylohyoid anterior belly of digastric |
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anterior belly of digastric
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V3
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mylohyoid
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V3
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tensors tympani
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V3
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muscles of mastication
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V3
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V (trigeminal) exits brainstem at
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pons
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VI (abducent) innervates
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laterl rectus muscle (extraocular) - somatic motor
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VI (abducent) enters skull at
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orbit, through superior orbital fissure
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VI (abducent) exits brainstem at
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pons/medulla border, medially
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VII (facial) exits skull through
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stylomastoid foramen
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VII (facial) exits brainstem at
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pons/medullar border, lateral to VI
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2nd pharyngeal arch
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VII (facial)
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VII (facial) enters face through
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internal auditory meatus and facial canal
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VII (facial) mediates
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taste on anterior 2/3 of tongue - special visceral sensory
sensation from the skin of the concha of the auricle - general visceral sensory |
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VII (facial) innervates
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cranial parasympathetic outflow pathway - general visceral motor
muscles of facial expression - special visceral motor |
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VIII (vestibulocochlear) enters face at
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internal auditory meatus
confined to temporal bone |
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VIII (vestibulocochlear) exits brainstem at
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pons/medulla border, lateral to VII
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VIII (vestibulocochlear) mediates
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hearing and balance - special somatic sensory
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3rd pharyngeal arch
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IX (glossopharyngeal)
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IX (glossopharyngeal) exits skull through
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jugular foramen
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IX (glossopharyngeal) exits brainstem at
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medulla, from postolivary sulcus
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IX (glossopharyngeal) mediates
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taste for posterior 1/3 of tongue - special visceral sensory
carotid body - baroreception (bld pressure) - general visceral sensory carotid sinus - chemoreception (bld CO2 and bld acidity) - general visceral sensory sensation for skin of external ear, upper pharynx, tongue - general somatic sensory |
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IX (glossopharyngeal) innervates
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cranial parasympathetic outflow pathway - general visceral motor
stylopharyngeus muscle and middle pharyngeal constrictor muscle - special visceral motor |
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X (vagus) exits skull through
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jugular foramen
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X (vagus) exits brainstem at
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medulla, from postolivary sulcus
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4th-6th pharyngeal arches
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X (vagus)
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X (vagus) mediates
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taste - special visceral sensory
sensation to larynx, esophagus, trachea, abdominal and thoracic viscera, inner ear - general visceral sensory |
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X (vagus) innervates
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parasympathetic cranial outflow pathway - general visceral motor
laryngeal and pharyngeal muscles - special visceral motor |
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XI (accessory) exits skull at
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jugular foramen
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XI (accessory) exits brainstem at
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medulla, from postolivary sulcus
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XI (accessory) innervates
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sternocleidomastoid
trapezius muscles of the larynx somatic motor |
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XII (hypoglossal) exits brainstem at
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medulla, between pyramid and inferior olive
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XII (hypoglossal) exits skull through
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hypoglossal canal
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XII (hypoglossal) innervates
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muscles of the tongue - somatic motor
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name the innervations for each pharyngeal arch
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1 - V
2 - VII 3 - IX 4 through 6 - X |
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which nerves have mediate the cranial parasympathetic outflow pathway (general visceral motor)?
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III
VII IX X |
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which nerves mediate taste (special visceral sensory)?
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VII
IX X |
