Cranial Nerves Flashcards
I Olfactory - Function
Sensory - carries impulses associated with smell
II Optic - Function
Sensory - carries impulses associated with vision
III Occulomotor - Function
Motor - inferior oblique, superior/inferior and medial rectus muscles of eye moving eye in socket also movement of eyelid and shape of lens
IV Trochlear - Function
Motor - innervates superior oblique eye muscle moving eye in eye socket
V Trigeminal - Function
Mixed - major sensory nerve of face/muscles of mastication
VI Abducens - Function
Motor - innervates lateral rectus eye muscle moving eye in eye socket
VII Facial - Function
Mixed - facial expression muscles/tear glands, salivary glands & taste at anterior portion of tongue
VIII Vestibulocochlear - Function
Sensory - sensations of balance/equilibrium, motion and hearing
IX Glossopharyngeal - Function
Mixed - muscles of larynx/pharynx/general throat sensations and swallowing/taste (posterior tongue)/pressure receptors from carotid artery control of blood pressure
X Vagus - Function
Mixed - sensory and motor fibers to pharynx/larynx/sensory impulses from viscera/parasympathetic fibers control heart rate and abdominal visceral organs
XI Spinal Accessory - Function
Motor - voice production, neck movement, motor control of innervated viscera/ movement of neck
XII Hypoglossal - Function
Motor - movement of tongue
Area of body innervated by Olfactory nerve
Nasal mucosa
Area of body innervated by Optic nerve
Eye
Area of body innervated by Occulomotor nerve
Most extrinsic eye muscles
Area of body innervated by Trochlear nerve
One extrinsic eye muscle
Area of body innervated by Trigeminal nerve
Face and mouth
Area of body innervated by Abducens nerve
One extrinsic eye muscle
Area of body innervated by Facial nerve
Face and anterior tongue
Area of body innervated by Vestibulocochlear nerve
Inner ear (vestibule, cochlea, and semicircular canals)
Area of body innervated by Glossopharyngeal nerve
Larynx, pharynx, largest salivary gland and posterior tongue
Area of body innervated by Vagus nerve
Many viscera of the thoracic and abdominopelvic cavities
Area of body innervated by Spinal Accessory nerve
Neck muscles and many thoracic and abdominopelvic viscera
Area of the body innervated by Hypoglossal nerve
Tongue
I Olfactory - Type
Sensory
II Optic - Type
Sensory
III Occulomotor - Type
Motor
IV Trochlear - Type
Motor
V Trigeminal - Type
Mixed
VI Abducens - Type
Motor
VII Facial - Type
Mixed
VIII Vestibulocochlear - Type
Sensory
IX Glossopharyngeal - Type
Mixed
X Vagus - Type
Mixed
XI Spinal Accessory - Type
Motor
XII Hypoglossal - Type
Motor
Sensory - Carries impulses associated with smell
CN I Olfactory
Sensory - Carries impulses associated with vision
CN II Optic
Motor - Inferior oblique, superior/inferior and medial rectus muscles of eye moving eye in socket, also movement of eyelid, and shape of lens
CN III Occulomotor
Motor - Innervates superior oblique eye muscle moving eye in eye socket
CN IV Trochlear
Mixed - Major sensory nerve of face/muscles of mastication
CN V Trigeminal
Motor - Innervates lateral rectus eye muscle moving eye in eye socket
CN VI Abducens
Mixed - Facial expression muscles/tear glands, salivary glands & taste at anterior portion of tongue
CN VII Facial
Sensory - Sensations of balance/equilibrium, motion and hearing
CN VIII Vestibulocochelar
Mixed - Muscles of larynx/pharynx/general throat sensations and swallowing/taste (posterior tongue)/ pressure receptors from carotid artery control of blood pressure
CN IX Glossopharyngeal
Mixed - Sensory and motor fibers to pharynx/larynx/sensory impulses from viscera/parasympathetic fibers control heart rate and abdominal visceral organs
CN X Vagus
Motor - Voice production, neck movement, motor control of innervated viscera/movement of neck
CN XI Spinal Accessory
Motor - Movement of tongue
CN XII Hypoglossal