Illustration of a Human Brain - stock photo

A schematic illustration of a human brain and a detail of a synapse exchanging neurotransmitters. Part of a series of six major human organs (lungs, heart, brain, liver, kidneys, intestines). Top: an illustration of a synapse, a place where two brain cells exchange neurotransmitters. The left cell contains synaptic vesicles (the larger circles and semi-circles at the end) that release the neurotransmitters. These will be received on the other side by the neurotransmitter receptors (the white pairs of small stripes). Left: a simplified illustration of the human brain. In the background: several wave shapes representing brain waves.