human brain nervous system anatomy, medical diagram with parasympathetic and sympathetic nerves.

circle organ earth screenshot planet space art sphere eye astronomy head reflection flower human brain nervous system anatomy sections separated colored spots medical diagram parasympathetic sympathetic nerves medically accurate central render spine cerebral lobe cortex anatomical biology cell cerebellum cerebrum colorful connection cord dendrite encephalon glow health hemisphere intellect intelligence light limbic medicine mind nerve network neural neurology neuron nucleus psychology sensory spinal structure