Can you briefly describe the events that occur when a nerve impulse arrived at a synapse?

Answer 1

A synapse is a junction where two nerves meets. when action potential reaches a synapse, the pores open allowing an afflux of calcium ions into presynaptic terminal. this causes neuro transmitters to be released and cross over the synaptic cleft to attach to receptors in the post synaptic membrane and allow impulse to pass.

Answer 2

In the nervous system, a synapse is a structure that permits a neuron to pass an electrical or chemical signal to another cell.

Synapses are essential to neuronal function: neurons are cells that are specialized to pass signals to individual target cells, and synapses are the means by which they do so. At a synapse, the plasma membrane of the signal-passing neuron (the presynapticneuron) comes into close apposition with the membrane of the target (postsynaptic) cell.

Both the presynaptic and postsynaptic sites contain extensive arrays of molecular machinery that link the two membranes together and carry out the signaling process. In many synapses, the presynaptic part is located on an axon, but some presynaptic sites are located on a dendrite or soma.

when an impulse arrives at the synapse, gap junctions that are capable of passing electrical current, causing voltage changes in the presynaptic cell to induce voltage changes in the postsynaptic cell. The main advantage of an electrical synapses is the rapid transfer of signals from one cell to the next.

Answer 3

There are two options, when an impulse arrives at a nerve synapse. Either the impulse is transmitted through the synapse to other nerves whose dendrites at at that synapse, or it isn't. This depends partially on the amount of neurotransmitters in the synapse, and partially on the number if impulses arriving at a given time.

Answer 4

Chemical transmitters are released