Cranial Nerves Flashcards
Sensory, passes
through the cribriform
plate of the ethmoid
bone. Sense of smell
Olfactory Nerve I
Sensory, to the optic
chiasm. vision
Optic Nerve II
Motor, 4 of the 6
extrinsic eye
muscles attaching to
the wall of the eye
are moved by it
Oculomotor III
Motor, superior oblique eye muscle, smallest one
Trochlear IV
• Mixed, LARGEST
• Motor: mastication muscle for
chewing
• Sensory: from anterior tongue
(not tase), cheeks, skin of face,
teeth
• Tic Douloureux: super painful
• chronic pain disorder that
involves sudden, severe facial
pain
Trigeminal V
Motor, 6th ocular
muscle called the
lateral rectus
muscle
Abducens VI
• Mixed
• Sensory: sense of taste from the anterior 2/3rds of the tongue • Motor: facial expressions, and muscle tone in the face
• Paralysis can cause the face to sag – Ball’s Palsy
• Due to nerve damage from bacterial or viral infection, OR tumors
• Can cause loss of taste, decreased salivation, loss of the ability to close the eyes even during sleep,
Facial, VII
Sensory, hearing and equilibrium, balance
Vestibulocochlear Nerve VIII
• Mixed, baroreceptors, superior and inferior ganglia
• Motor: muscles for swallowing and gagging
• Sensory: from the
throat and posterior 1/3
of the tongue(taste)
Glossopharyngeal Nerve IX
• mixed, parasympathetic!
• Pharynx, larynx, heart, GI tract
Vagus X
• Motor, muscles of the
upper back and neck to
turn the head
Accessory XI
• Motor, muscles of the
tongue
Hypoglossal XII
I
One. olfactory nerve
II
Optic nerve. Two
III
Oculomotor. 3
