(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, ...

Interactions of two voltage-gated calcium channels and a pump enable separate control of exocytosis and endocytosis at chemical synapses. Chemical synapses transmit information within the nervous ...

The brain has the ability to modify the contacts between neurons. Among other things, that is how it prevents brain activity from getting out of control. Researchers have now identified a mechanism ...

Also referred to as chemical messengers, neurotransmitters are chemical agents made and released by neurons. They are stored in vesicles at the terminal end (presynaptic terminal) of a neuron. Their ...