Functions of Cranial Nerves Flashcards
What is the component and function of the Olfactory CNI
Special sensory - smell
What is the component and function of the Optic CNII
Special sensory - vision
What is the two components of Oculomotor CNII
Somatic Motor
Visceral Motor
What does the somatic motor component of Oculomotor innervate
Extraocular muscles
- Superior recti
- Inferior recti
- Medial recti
- Inferior oblique
Levator palpebrae superioris (eyelid)
What does the visceral motor component of Oculomotor innervate
Parasympathetic:
Pupil - constriction
Ciliary muscle -accommodation of the lens
What is the component and function of the Trochlear CNIV
Somatic motor innervates the superior oblique extra ocular muscle
(turns eye downwards)
What is the the component and function of Abducent CNVI
Somatic motor innervates lateral rectus extraocular muscle
abducts the eye
What is the component and function of the trigeminal Ophthalmic CNV1
General sensory info from: Cornea Forehead Scalp Eyelids Nose Mucosa of nasal cavity and sinuses
What is the component an function of trigeminal maxillary CNV2
General sensory info from:
face over maxilla, maxillary teeth, temperomandibular joint,
mucosa of nose, maxillary sinuses palate
What is the two components of trigeminal mandibular CNV3
General sensory
Somatic motor
What is the general sensory component of the Trigeminal Mandibular CNV3 function
Info from:
face over mandible, mandibular teeth, temperomandibular joint,
mucosa of mouth, anterior 2/3rds of tongue
What is the somatic motor component of the Trigeminal Mandibular CNV3 function
Innervates;
Muscles of mastication,
part of digastric,
tensor veli palatinin (soft palate)
tensor tympani
(ear)
What is the four components of the facial CNVII
Somatic motor
Visceral motor
Special sensory
General sensory
What is the function of the somatic motor of the facial nerve
Innervates muscles of facial expression scalp,
stapedius of middle ear,
part of digastric muscle
What is the function of the visceral motor of the facial nerve
parasympathetic innervation of submandibular & sublingual salivary glands,
lacrimal glands, glands of nose & palate
What is the function of the special sensory of the fascial nerve
taste from the interior 2/3rd tongue and soft palate
What is the function of the general sensory of the fascial nerve
from external acoustic meatus
What is the component and function of the vesibulocochlear CNVIII
Special sensory provides vestibular sensation from semicircular ducts, utricle, saccule gives sense of position and movement
and hearing from cochlea
What is the 5 components of the glossopharyngeal CNIX
Special sensory General sensory Visceral sensory visceral motor Somatic motor
What is the function of the special sensory of the glossopharyngeal CNIX
Taste from posterior 3rd of tongue
What is the function of the general sensory of the glossopharyngeal CNIX
provides cutaneous sensations from middle ear and posterior oral cavity
What is the function of the visceral sensory of the glossopharyngeal CNIX
sensation from carotid body & carotid sinus
What is the function of the visceral motor of the glossopharyngeal CNIX
parasympathetic innervation of parotid gland
What is the function of the somatic motor of the glossopharyngeal CNIX
Innervation to stylopharyngeus to helps with swallowing
What is the five components of the Vagus CNX
Special sensory General sensory Visceral sensory visceral motor Somatic motor
What is the function of the special sensory of the vagus nerve
Taste from epiglottis and palate
What is the function of the general sensory of the vagus nerve
Sensation from auricle, external acoustic meatus
What is the function of the visceral sensory of the vagus nerve
Receives info from: pharnyx, larynx, trachea, bronchi, heart, oesophagus, stomach, intestine
What is the function of the visceral motor of the vagus nerve
parasympathetic innervation muscle in bronchi, gut, heart
What is the function of the somatic motor of the vagus nerve
Innervation to pharynx, larynx, palate & oesophagus
What is the composition and function of the Accessory CNXI
somatic motor innervates striated muscle of soft palate,
pharynx & larynx, sternocleidomastoid & trapezius
What is the composition and function of the hypoglossal CNXII
Somatic motor innervating muscles of the tongue
What cranial nerve is responsible for smell
Olfactory
What cranial nerve is responsible for sight
Optic
What cranial nerves is responsible for taste
Facial
Glossopharyngeal
Vagus
What cranial nerve is responsible for hearing and balance
Vestibulocochlear
What cranial nerves is responsible for movements of the eye
Oculomotor
Trochlear
Abduncent
What cranial nerve is responsible for movements of the face
Facial
What cranial nerve is responsible for sensation from the face
Trigeminal
What cranial nerve is responsible for chewing
Trigeminal - mandibular
What cranial nerves is responsible for swallowing
Glossopharyngeal and accessory
What cranial nerve is responsible for movement of the tongue
Hypoglossal
What cranial nerve is responsible for movements of vocal cord
Vagus
What cranial nerves is responsible for parasympathetic input
Oculomotor, Facial, Vagus and glossopharyngeal
What cranial nerve is responsible for movements in the neck
Accessory
What cranial nerves is responsible for visceral sensory input
Vagus and glossopharyngeal
