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Cards In This Set
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Cranial Nerve I
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Olfactory NerveP.F.- Smell; Special SensoryOrigin- receptors of olfactory epitheliumPathway- Olfactory Foramina in Cribiform Plate of EthmoidDestination- Olfactory Bulb (either side of Crista Galli)
Olfactory Tracts: Axons of postsynaptic neurons; Leading to Cerebrum |
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Cranial Nerve II
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Optic NervesP.F- Vision; special sensoryOrigin- Retina of EyePathway- Optic canals of sphenoidDestination- Diencephalon via optic chiasma (sensory fibers converge here and cross to opposite side of brain)
Optic Tracts: Reorganized axons leading to lateral geniculate nuclei |
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Cranial Nerve III
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Oculomotor NervesP.F.-Eye Movement (intrinsic/extrinsic); somatic motorOrigin- Mesencephalon Pathway- Superior Orbital Fissures of Sphenoid BoneDestination- superior, inferior, medial rectus m.; Inferior oblique m, levator papelbrae superioris m.
Controls 4/6 eye movement musclesDelivers Autonomic Fibers to Ciliary Ganglion; C.G. controls intrinsic muscle of iris and lens; Destination- Parasympathetic pupillary constrictor muscle (visceral motor) |
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Cranial Nerve IV
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Trochlear NervesP.F.-Eye movements (superior oblique m.); somatic motorOrigin- MesencephalonPathway- Superior Orbital Fissure of Sphenoid BoneDestination- Superior oblique muscle
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Cranial Nerve V
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Trigeminal Nerve; Mixed FunctionLargest Cranial Nerves- 3 Major Branches (ophthalmic, maxillary, mandibular)
(separate card for each branch) Semilunar Ganglion- contain cell bodies of sensory neurons |
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Cranial Nerve VI
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The Abducens NervesP.F.- Eye movements (lateral); somatic motorOrigin- PonsPathway- superior orbital fissure of sphenoidDestination- Lateral Rectus Muscle
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Cranial Nerve VII
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Facial; Mixed FunctionSensory Origin- taste receptors in anterior 2/3 part of tongueMotor Origin- motor nuclei of ponsPathway- Internal acoustic meatus to facial canals (stylomastoid foramina)Sensory Destination- sensory nuclei of ponsSomatic Destination- muscles of facial expressionVisceral Motor- tear/nasal mucous glands, submandibular/sublingual salivary glands
Branches- Temporal, Zygomatic, Buccal, Mandibular, Cervical |
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Cranial Nerve VIII
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VestibulocochlearP.F.- Vestibular Branch-Balance/EquilibriumCochlear Branch- HearingSpecial SensoryOrigin- Receptors of Inner EarPathway- Internal Acoustic Meatus (Temporal Bone)Destination- Pons+Medulla Oblongota (Vestibular and Cochlear Nuclei)
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Cranial Nerve IX
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Glossopharyngeal Nerve- Mixed Function (Head and Neck)
Sensory Origin- posterior 1/3 of tongue, part of pharynx/palate, carotid arteryMotor Origin- motor nuclei of medulla oblongotaPathway- jugular foramina between occipital/temporal bonesSensory Destination- sensory nuclei of medulla oblongotaSomatic Destination- Swallowing NervesVisceral Destination- parotid salivary gland |
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Cranial Nerve X
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Vagus Nerve; Mixed FunctionSensory Origin- Part of pharynx, auricle/external acoustic meatus, diaphragm, visceral organs of thoracic/abdominopelvic cavitiesMotor Origin- Motor nuclei of medulla OblongotaPathway- Jugular Foramina between occipital/temporal bonesSensory Destination- sensory nuclei and autonomic centers of medulla oblongotaVisceral Destination- Muscles of palate/pharynx, digestive, respiratory, cardiovascular system in thoracic and abdominal cavities
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Cranial Nerve XI
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Accessory Nerve- Mixed FunctionP.F.- motor to muscles of neck/upper backOrigin- motor nuclei of spinal cord and medulla oblongotaPathway- jugular foramina between occipital/temporal bones Destination- Internal branch (voluntary muscle of palate, pharynx, and larynx); External Branch (sternocleidomastoid and trapezius muscles)
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Cranial Nerve XII
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The Hypoglossal NerveP.F.- tongue movement; somatic motorOrigin- Motor Nuclei of Medulla OblongotaPathway- Hypoglossal Canals of Occipital BoneDestination- Muscles of Tongue
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Which Cranial Nerves are the Special Sensory Ones (and what are each's primary function)?
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I- olfactory- smellII-optic- visionVIII- vestibulocochlear- balance/equilibrium (vestibular branch) and cochlear (hearing)
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Ophthalmic Branch of Trigeminal Nerve
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Sensory FunctionOrigin- orbital structures, nasal cavity, skin of forehead, upper eyelid, eyebrow, part of nosePathway- superior orbital fissureDestination- sensory nuclei in pons
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Maxillary Branch of Trigeminal Nerve
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Sensory FunctionOrigin- lower eyelid, upper lip, gums, teeth, cheek/nose, palate+part of pharynxPathway- foramen rotundumDestination- ? appears upon the face at the infraorbital foramen. Here is it referred to as the infraorbital nerve, a terminal branch...according to WIKI
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