human brain, internal organs anatomy body part nervous system

abducens accessory anatomy biology brain brainstorm callosum care cerebellum cerebral cerebrum chiasm cord corpus cortex cranial design diagram flat gland glossopharyngeal graphic head health human hypoglossal hypothalamus illustration infundibulum internal lobe medical medulla memory nerves nervous neurology oculomotor olfactory optic organs peduncle pituitary pole pons spinal structure surgery system thalamus think trigeminal trochlear tumor vagus vector vestibulocochlear