What is a nerve?

World of Biology on Instagram: "Neurotransmission is the process by which nerve cells, or neurons, communicate with each other to transmit signals throughout the body. This is what neurotransmission looks like: an electrical impulse travels along the axon of a neuron until it reaches the synaptic terminal, where it triggers the release of chemical messengers called neurotransmitters. These neurotransmitters cross the tiny gap known as the synaptic cleft and bind to receptors on the neighboring n