Cranial Nerves Flashcards
cranial nerve I
olfactory
cranial nerve II
optic
cranial nerve III
oculomotor
cranial nerve IV
trochlear
cranial nerve V
trigeminal
cranial nerve VI
abducens
cranial nerve VII
facial
cranial nerve VIII
vestibulocochlear
cranial nerve IX
glossopharyngeal
cranial nerve X
vagus
cranial nerve XI
spinal accessory
cranial nerve XII
hypoglossal
what is the olfactory nerve (I) associated with?
the cerebrum
what does the olfactory nerve pass through?
cribriform plate in ethmoid bone
what job does the olfactory nerve have?
special sensory (smell)
what is the optic nerve associated with?
diencephalon
what is the origin of the optic nerve?
retina of the eye
what is the function of the optic nerve
special sensory (vision)
what is the unity of the two optic nerves called?
the optic chiasm
what do the optic nerves move through?
the thalamus via optic tracts and then pass to the visual cortex in the occipital lobe of the cerebrum
what is the function of the oculomotor nerve?
motor (eye)
what is the oculomotor nerve associated with?
the midbrain (mesencephalon)
what does the oculomotor nerve pass through?
the superior orbital fissure of the sphenoid
somatic motor functions of the oculomotor nerve?
eye movement: superior/inferior/medial recti muscles, inferior oblique muscle
parasympathetic motor functions of the oculomotor nerve
intrinsic eye muscles (adjust lens and constrict pupil)
what is the function of the trochlear nerve?
motor (eye)
what does the trochlear nerve pass through?
the superior orbital fissure of the sphenoid bone
the trochlear nerve is associated with the…
midbrain (mesencephalon)
trochlear nerve is the _____ nerve and the only nerve that exits _____
smallest, posteriorly
somatic motor functions of the trochlear nerve
eye movement: superior oblique muscle
trigeminal nerve function is
mixed (both sensory and motor)
trigeminal nerve passes through the
sphenoid
the different branches of the trigeminal nerve are
opthalamic (V1), maxillary (V2), mandibular (V3)
sensory functions of the opthalamic branch of the trigeminal nerve
skin of the forehead, upper eyelid, eyebrow
sensory functions of the maxillary branch of the trigeminal nerve
lower eyelid, upper lips, gums and teeth, cheek and nose
sensory functions of the mandibular branch of the trigeminal nerve
lower gums, teeth, and lips, chin
general sensory function of the trigeminal nerve
carries sensations from the skin and mucosa of most of the head and face; touch, pain, and thermal sensations from the scalp, face, and oral cavity (including the teeth and anterior 2/3 of the tongue)
mandibular branch of trigeminal nerve motor functions
chewing and control of the middle ear muscle, innervate most muscles of mastication
trigeminal nerve is associated with the….
pons
abducens nerve is associated with the ….
pons
the abducens nerve passes through the…
superior orbital fissure of the sphenoid
the abducens ends at the
lateral rectus muscles
function of abducens nerve
motor (eye), ABducens, ABduct
facial nerve function
mixed (sensory and motor)
sensory function of the facial nerve
taste from anterior 2/3 of tongue, touch, pain, and thermal sensations from sin in external ear canal
motor function of facial nerve (brachial)
control of muscles of facial expression and middle ear muscle
motor function of facial nerve (autonomic)
secretion of tears and saliva
facial nerve parasympathetic NS
submandibular and sublingual salivary glands, lacrimal glands, nasal mucus glands
vestibulocochlear nerve function
special sensory (hearning and balane)
vestibulocochlear nerve passes through the
internal acoustic meatus of the temporal bone
branches of vestibulocochlear
vestibular and cochlear
vestibulocochlear nerve is associated with the
medulla oblongata
glossopharyngeal nerve function
mixed (sensory and motor)
glossopharyngeal nerve passes through
the jugular foramen
sensory functions of the glossopharyngeal nerve
taste from the posterior 1/3 tongue, proprioception in some swallowing muscles, monitoring of blood pressure and oxygen and CO2 levels in blood, touch pain, and thermal sensations from skin of the external ear and upper pharynx
motor functions of the glossopharyngeal nerve (brachial)
assists in swallowing
motor functions of the glossopharyngeal nerve (autonomic)
secretion of saliva-parotid salivary gland
function of the vagus nerve
mixed (sensory and motor)
sensory function of the vagus nerve
taste from epiglottis, proprioception from throat and voice box muscles, monitoring of blood pressure and oxygen/CO2 levels in blood, touch, pain, and thermal sensations from skin of external ear, sensations from thoracic and abdominal organs
motor function of vagus nerve (brachial)
swallowing, vocalization, and coughing
motor function of vagus nerve (autonomic)
motility and secretion of GI organs, constriction of respiratory passageways, decrease in heart rate
vagus nerve passes through the
jugular foramen
vagus nerve is associated with the
medulla oblongata
spinal accessory nerve passes through the
jugular foramen
function of the spinal accessory nerve
motor
motor function of the spinal accessory nerve
movement of the head and pectoral girdle
spinal accessory nerve is associated with the
medulla oblongata
function of the hypoglossal nerve
motor (tongue movements)
motor function of hypoglossal nerve
somatic: speech, manipulation of food and swallowing
hypoglossal nerve passes through the
hypoglossal canal of the occipital bone
hypoglossal nerve is associated with the
medulla oblongata