Neurotransmitters are chemical messengers that help nerve cells (neurons) communicate with one another. These chemical messengers affect the brain by either exciting (stimulating), inhibiting ...

Transmission across a synapse (IMAGE) Okinawa Institute of Science and Technology (OIST) Graduate University Caption When an electrical signal arrives at the presynaptic terminal, neurotransmitters ...

(1) A nerve impulse arrives. (2) This causes calcium ion channels to open, resulting in an influx of calcium ions in the terminal. (3) This causes synaptic vesicles to fuse with the terminal membrane, ...

Your body functions using chemical messages that are directed throughout your system with specific targets. These chemical messages are carried by neurotransmitters, which act as a messenger directing ...