Cranial Nerves
carotid sinus
At the branching of internal and common carotid is the BLANK BLANK- a baroreceptor that provides barometric pressure info to help regulate bp
Mandibular (V3)
BLANK division of trigeminal nerve conducts sensory impulses from ant. 2/3 of tongue, meninges, skin of chin, lower jaw, lower teeth; 1/3 sensory axons of auricle of ear
Opthalmic (V1)
BLANK division of trigeminal nerve conducts sensory impulses from cornea, nose, forehead, ant. scalp, and meninges
Maxillary (V2)
BLANK division of trigeminal nerve conducts sensory impulses from nasal mucosa, palate, gums, cheek, and meninges
taste from ant. 2/3 of tongue
CN VII Facial sensory function
anosmia
Damage to the olfactory nerve causes what condition
CN I Olfactory
Description of what nerve: Conducts olfactory sensations to brain
CN VII Facial
Innervates muscles of facial expression; lacrimal gland, and most salvary glands; conducts taste sensations from ant. 2/3 of tongue
CN XI Accessory
Innervates trapezius and sternocleidomastoid muscles
spinal cord
Origin of spinal root of CN XI Accessory
Receptors in olfactory mucosa of nasal cavity
Origin of the Olfactory nerve
innervates sphincter pupillae muscle of iris to make pupil constrict. Contracts cilliary muscles to make lens of eye more spherical
Parasympathetic motor function of CN III Oculomotor
Innervates smooth muscle of thoracic and most abdominal organs, cardiac muscle, and glands of heart, lungs, pharynx, larynx, trachea, and most abdominal organs
Parasympathetic motor function of CN X Vagus
Visceral sensory information from heart, lungs, and most abdominal organs. General sensory information from external acoustic meatus, eardrum, laryngopharynx and larynx
Sensory function of CN X Vagus Nerve
Innervates most pharynx muscles and all larynx muscles
Somatic motor function of CN X Vagus
Innervates intrinsic and extrinsic tongue muscles
Somatic motor function of CN XII hypoglossal
CN III Oculomotor
This nerve innervates the upper eyelid muscle and four of the six extrinsic eye muscles
CN I Olfactory
What CN has the only type of nervous tissue to regenerate?
CN XI accessory
Which CN loops up from the spinal cord into the cranium and out the jugular foramen
anopsia
condition caused by damage to the optic nerve
loss of hearing
conditions from damage to cochlear branch
loss of balance, nausea, vomiting, and dizziness
conditions from damage to vestibular branch
ptosis, paralysis of most eye muscles, diplopia, focusing difficulty
conditions if CN III oculomotor is damaged
dry eye, dry mouth, loss of taste sensation ant. 2/3 of tongue, and bell palsy
conditions of damaged facial nerve
trigeminal neuralgia
conditions of nerve damage for CN V trigeminal
paralysis of superior oblique, diplopia
conditions possible if trochlear nerve is damaged
CN VIII Vestibulocochlear
conducts equillibrium and auditory sensations to brain
anosmia
damage to the ethmoid bone may cause BLANK if it damages the nerve receptors
CN XII Hypoglossal
innervates intrinsic and extrinsic tongue muscles
CN VI Abducens
innervates lateral rectus eye muscle, which abducts the eye
I Olfactory II Optic III Oculomotor IV Trochlear V Trigeminal VI Abducens VII Facial VIII Vestibulocochlear IX Glossopharyngeal X Vagus XI Accessory XII Hypoglossal
list all cranial nerves in order
Oculomotor, trochlear, abducens, Accessory, and Hypoglossal
list the motor only nerves
Trigeminal, Facial, Vestibulocohlear, Glossopharyngeal, and vagus
list the nerves that do both motor and sensory function
Olfactory and optic
list the sensory only nerves (no numbers needed)
temporalis, masseter, lateral and medial pterygoids
muscles of mastication innervated by CN V trigeminal include
superior rectus, inferior rectus, medial rectus, and inferior oblique
name the 4 extrinsic eye muscles included in the somatic function of the CN III oculomotor
temporal, zygomatic, buccal, mandibular, and cervical
name the 5 major branches of the facial nerve
midbrain
origin of CN III oculomotor
pons
origin of CN V trigeminal
pons
origin of CN VI abducens
pons
origin of CN VII facial
motor nuclei in medulla oblongata
origin of CN X Vagus
Hypoglossal nucleus in medulla oblongata
origin of CN XII hypoglossal
cochlea of the inner ear
origin of cochlear branch of CN VIII vestibulocochlear
Medulla oblongata
origin of cranial root of CN XI Accessory
retina of the eye
origin of the optic nerve
midbrain
origin of trochlear nerve
hair cells in the vestibule of inner ear
origin of vestibular branch of CN VIII vestibulocochlear
increases secretions of lacrimal gland as well as submandibular and sublingual salivary glands
parasympathetic motor function of CN VII Facial
Vision
sensory function of CN II Optic
vestibular branch conducts impulses for equilibrium, cochlear branch conducts impulses for hearing
sensory function of CN VIII vestibulocochlear
touch, temperature, and pain
sensory types of information for the trigeminal nerve are
supplies 4 extrinsic eye muscles to move eye and supplies levator palpebrae superioris muscle to elevate eyelid
somatic motor function of CN III Oculomotor
innervates muscles of mastication, mylohyoid, ant. belly of digastic, tensor tympani and tensor veli palatini
somatic motor function of CN V trigeminal
innervates lateral rectus for eye abduction
somatic motor function of CN VI abducens
5 major motor branches innervate the muscles of facial expression, the posterior belly of the digastric muscle, and the stylohyoid and stapedius muscles
somatic motor function of CN VII Facial
travels with CN XI Accessory to pharynx
somatic motor function of cranial root for CN XI Accessory
motor nuclei in spinal cord
somatic motor function of spinal root of CN XI Accessory
sphenoid
the optic nerve passes through which bone via the optic foramen
CN V Trigeminal
this nerve consists of 3 divisions: opthalmic (V1) Maxillary (V2), and Mandibular (V3); receives sensory from face, oral cavity, nasal cavity, meninges and anterior scalp. Innervates muscles of mastication
CN IV trochlear
this nerve innervates 1 extrinsic eye muscle that loops through a pulley shaped ligament
CN X Vagus
this nerve innervates structures in the head and neck and in the thoracic and abdominal cavities
CN II Optic
this special sensory nerve of vision if an outgrowth of the brain; more appropriately called a brain tract
inferiorly and laterally
what directions does the superior oblique move the eye
superior oblique
what is the 1 extrinsic eye muscle innervated by the trochlear nerve
bipolar
what type of neurons are the receptors for the olfactory nerve
junction of pons and medulla oblongata
where does the vestibulocochlear nerve enter the brainstem
