human brain, internal organs anatomy body part nervous system

abducens accessory anatomy biology blood brain brainstem callosum care cerebellum cerebral cerebrum chiasm circle circulation 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 pons spinal supply surgery system thalamus think trigeminal trochlear tumor vagus vector vestibulocochear vestibulocochlear willis