Cranial Nerves Flashcards
Cranial Nerve 1 is
Olfactory , sensory
Cranial nerve 2 is
Optic , Sensory
Cranial nerve 3 is
Oculomotor , motor
Cranial nerve 4 is
trochlear , motor
Cranial nerve 5 is
trigeminal, both
Cranial nerve 6 is
Abducens, motor
Cranial nerve 7 is
Facial, both
Cranial nerve 8 is
Vestibulocochlear, sensory
Cranial nerve 9 is
Glossopharyngeal, both
Cranial nerve 10 is
Vagus, both
Cranial nerve 11 is
Accessory spinal, motor
Cranial nerve 12 is
Hypoglossal, motor
Which cranial nerves carry sensory information only
1,2,8
Which cranial nerves carry motor innervation only
3,4,7,11,12
Which cranial nerves carry both sensory and motor innervation
5,7,9,10
Olfactory nerve exits out of
Cribriform plate
Olfactory nerve innervates (1)
Olfactory epithelium of nasal mucosa
Optic nerve exits out of
Optic Canal
Optic nerve carries
Visual input from retina
The optic nerve is really an extension of
The CNS and is covered by meninges
Oculomotor nerve goes through
Superior orbital fissure
Oculomotor nerve innervates via GSE these extrinsic eye muscles (4)
Superior rectus, inferior rectus, medial rectus, inferior oblique
Oculomotor carries GVE innervation to these intrinsic eye muscles (2)
Sphincter papillae and Ciliary muscle
The parasympathetic response of Oculomotor nerve results in
Constriction of pupil
Trochlear nerve innervation goes though
Superior orbital fissure
Trochlear nerve innervates which muscle of the eye
Superior oblique muscle (extrinsic)
Trigeminal nerve splits at the
Trigeminal ganglion
What are the 3 division of the trigeminal nerve
Ophthalmic, maxillary, mandibular
Ophthalmic division of trigeminal carries sensory information of the
Scalp, forehead, upper eye lid
Maxillary division of the trigeminal nerve carries sensory information from
Lower eyelid, cheeks, upper lips and teeth, and nostrils
Maxillary GSA sensory information is transmitted via
Foremen rotundum
Ophthalmic GSA sensory information is transmitted via
Superior orbital fissure
mandibular division of trigeminal nerve carries sensory information from
Lower lip, lower teeth, chin, and some external ear
Mandibular GSA sensory information is transmitted via
Foremen ovale
Mandibular portion of trigeminal nerve innervates these muscles (4)
Masseter, Temporalis, medial pterygoid, lateral pterygoid
Trigeminal nerve innervates these muscle (4)
Tensor veil palatini, tensor tympani, mylohyoid, anterior belly of digastirc
Abducens nerve transmits information via
Supraorbiral fissure
Abducens nerve innervates this muscle
lateral rectus muscle
Facial nerve fibers are transmitted via (2)
Stylomastoid foremen and internal acoustic meatus
Facial nerve SVE fibers innervates (3)
Stapedius, stylohyoid, posterior digastric
Facial nerve GVE fibers innervate (3)
Lacrimal, sublingual, submandibular glands
Facial nerve SVA fibers innervate
Taste buds of anterior 2/3 of tongue (not taste)
Facial nerve GSA or GVA innervate
Middle ear
Facial nerve GSA fibers innervate
External ear
Vestibulocochlear nerve fibers o through
Internal acoustic meatus of temporal bone
Vestibulocochlear nerve carries SSA fibers used for (2)
Hearing and equilibrium
Glossopharyngeal nerve fibers go through
Jugular foremen
Glossopharyngeal SVA fibers innervate
Taste buds of posterior 1/3 of tongue
Glossopharyngeal GVE fibers innervate
Parotid gland
Glossopharyngeal GVA or GSA fibers innervate (5)
Pharynx, carotid sinus, posterior 1/3 tongue, auditory tube, middle ear
Glossopharyngeal SVE fibers innervate
Stylopharyngeus
Glossopharyngeal GSA fibers innervate
External ear
Vagus nerve goes through
Jugular foremen
Vagus GVE fibers carry fibers to
Smooth and cardiac MM, glands of thoracic and abdominal organs
Vagus nerve carries GVA fibers to
Carotid and aortic bodies
Vagus nerve carries SVE fibers to
Soft palate, pharynx, larynx, esophagus
Vagus nerve carries SVA fibers to
Epiglottis, taste at tongue root
Vagus nerve carries GSA fibers to
External ear
Spinal accessory nerve should really be considered a
Ascending spinal nerve
Spinal accessory nerve arises from
First portion of spinal cord, ascending through foremen magnum, and then exits jugular canal
Spinal accessory nerve caries GSE or SVE fibers to (2)
Sternocleidomastoid and trapezius
Spinal accessory nerve carries SVE fibers to these 2 muscle
Pharynx and larynx
Hypoglossal nerve travels through
Hypoglossal canal
Hypoglossal nerve innervates (2)
All intrinsic and extrinsic muscles of tongue
Does not innervate palatoglossus