Cranial Nerves Flashcards
How many Cranial Nerves?
12
How many Sensory Nerves?
3
How many Motor Nerves?
5
How many Mixed Nerves?
4
Sensory Nerves
Olfactory
Optic
Vesibulocochlear
Olfactory Location
Receptors in Olfactory Mucosa of Nasal Cavity
Olfactory Function
Olfaction (Smell)
Optic (II)
Sight Nerve “Point two fingers at eye”
Optic Location
Retina in the eye
Optic Function
Vision
Vesibulocochlear (VII)
“Make some headphones while balancing”
Vesibulocochlear Location
Vestibular Branch: Hair cells in Vestibule of Inner Ear
Cochlear Branch: Cochlea of inner ear
Vesibulocochlear Function
Vestibular branch conducts nerve impulses for equilibrium whereas cochlear branch inpulses for hearing
Motor Nerves
Oculomotor Trochlear Abducens Accesory Hypoglossal
Oculomotor
“Threes next to eye, three pointers”
Oculomotor Location
The eye
Superior Rectus Muscle
Eyes go Superior
Inferior Rectus Muscle
Eyes go Inferior
Medial Rectus
Eyes go Medially
Inferior Oblique
Eyes go Superior and Lateral
Oculomotor Functions
Visceral Motor to pupil/lens
Constrict the pupils
Trochlear
“Dragging eyes down”
Trochlear Function
Moves the eyes down and out
Trochlear Location
Superior Oblique
Abducens
“Hands on eyes, making eyes look Asian”
Abducens Location
Lateral Rectus
Abducens Functions
Makes the eyes go laterally
Accesory
“Two fingers up, moving the scapula and head”
Accesory Location
Trapezius and Sternocliedomasiod
Accesory Function
Moves Head/Neck?
Hypoglossal
“When I was 12, I stuck my tongue out at people”
Hypoglossal Location
Hypogflossal Nucleus in medulla oblongata
Hypoglossal Function
Moves the tongue
Mixed Nerves Components
Trigeminal
Facial
Glossopharyngeal
Vagus
Trigeminal Components
Ophthalmic
Maxillary
Mandbular
Trigeminal
“Hand over Face”
Opthalmic
(V1)
Sensory to Upper Face
“Forehead and Upper Nose”
Maxillary
(V2)
Sensory to mid face
“Maxilla and Bottom of Nose”
Mandibular
(V3) Mixed “Mandible and also is a motor”
Sensory to lower face
Motor to muscles of mastication
Facial Location
The Face
Facial Functions
Muscles of facial expression
Secretomotor to all glands of head except parotid
Taste to anterior 2/3 of tongue
Glossopharyngeal
“Square root of nine, need to know three things”
Glossopharyngeal Functions
Secretomotor to Parotid Motor to Stylopharyngeus Taste and Feel to Posterior Tongue 1/3 Sensory to Throat Carotid Receptors
Carotid Receptors
Sense Blood Pressure. Called Cartoid Body
Vagus
“The Wanderer, Lost in Vegas”
Vagus Location
Motor Nuclei in Medula Oblongata
Hypoglossal Nerve Test
One side of the tongue sticks out longer meaning one side may not work
Vagus Functions
Innervates many of the thoracic and abdominal organs
Motor to Pharynx and Larynx (Sensory and Motor Voice Box)
Sensory and motor to SMooth Muscle, Cardiac Muscle and glands in much of thorax and abdomen
