Cranial Nerves Flashcards
CN1
Olfactory
It does smell
CNII
vision
CNIII
Oculomotor.
Raises eyelid, turns eye, pupillary restriction, accomodation
CNIV
Trochlear
Moves eye down and lateral
CNV
Trigeminal
Sensations from eyes, skin around eyes, mouth and jaw;
Muscles involved in mastication
CNVI
Abducens
Moves eye outward
CNVII
Facial
Facial expression, salivation, and oral/nasal gland secretion.
sensation around ear and taste
CNVIII
Vestibulocochlear
Sensory reception for sound and movement
CNIX
Glossopharyngeal
Taste; elevation of pharynx for speech and swallowing; baroreceptors
CNX
Vagus
Motor speech, visceral reflexes(vomit), taste, respiration, cardiac functions bronchoconstriction; visceral function
CNXI
Accessory
Contralateral turning and lifting of head
CNXII
hypoglossal
shape and position of tongue
What are the functions of CN VII
Facial
MOTOR: Facial expression, reflexive eye closing on touch and contraction of ossicles for protection
VISCERAL MOTOR: induces salivation, secretion from lacrimal and mucous glands of nose and mouth
SENSORY: taste from anterior 2/3 of tongue and info from back of ear and external auditory meatus
What are the functions of CN IX?
Glossopharyngeal
SOMATIC MOTOR: elevation of upper pharynx during speech and swallowing
VISCERAL SENSORY: Responds to changes in blood pressure, via stretch from carotid sinus baroreflex
SOMATIC SENSORY: posterior 1/3 of tongue
What are the functions of CN X
Vagus
VISCERAL MOTOR: speech production
VISCERAL SENSORY: Reflexes like peristalsis, vomit, gastric and bronchial secretions, regulates heart rate
What are the functions of CN XI?
Accessory
Contralateral turning and lifting of head
What are the functions of XII?
Hypoglossal
Control shape and position of tongue
What three areas get sensory input from CN V
Trigeminal
Opthalmic–cornea, forehead, scalp, eyelids, nose, muscous membranes of sinuses and nasal cavity
Maxillary–skin of face over upper jaw, teeth of upper jaw, muscous membraine of nose, maxillary sinus and palate
Mandibular– skin of cheek, skin over lower jaw, tmj, muscous membrane of mouth and anterior tongue
What motor output does CN V have?
Muscles involved in mastication