oculomotor nerve poster

brain anatomy oculomotor cranial nerve brainstem human vector diagram nervous system illustration neurology head organ cortex hypothalamus sensory motor olfactory cerebellum cerebral cerebrum section optic trigeminal facial vestibulocochlear glossopharyngeal vagus accessory hypoglossal muscle extraocular eye eyeball ocular vision view retina pupil disc cornea iris branch ciliary ganglion 3d parasympathetic fibres