cranial nerves

CN I

smell

CN II

sight

CN III

controls pupil+lens shape, innervates extraoccular muscles

CN IV

innervates superior oblique muscle (intorsion + downward gaze)

CN V

facial sensations, chewing/ swallowing

CN VI

innervates lateral rectus muscle (abduction)

CN VII

innervates facial muscles + expression, taste on tip of the tongue, lacrimal gland, saliva

CN VIII

balance + hearing

CN IX

swallowing, taste @ back of tongue, innervates salivary gland

CN X

heart rate, digestion, coughing, sneezing, vomit, swallowing, speaking

CN XI

innervates trapezius (shoulder shrug, head tilt and rotation)

CN XII

innervates muscles of the tongue

function nemonic

SMSMMBMBSBBMM

brainstem

allows communication between cerebrum, cerebellum, and spinal cord

cervical plexus

brachial plexus

lumbar plexus

sacral plexus