Substances that trigger communication after the actions of neurotransmitters at their receptors have been completed. Second messengers convey the chemical message of...
A nerve ending, cell, or group of cells specialized to sense or receive light.
In animals, nerve endings that signal the sensation of pain. In humans, they are called pain receptors.
N-methyl-d-aspartate (NMDA) receptors, one of three major classes of glutamate receptors, which have been implicated in activities ranging from learning and memory...