What is a synapse?

In the nervous system, information is carried by electrical impulses from sensory neurons to the brain, from the brain to motor neurons, and within the neurons of the brain itself. A synapse is a connection between two neurons, and allows the transmission of electrical impulses from one neuron to the other. In order to do this, the electrical impulse must be converted into a chemical signal. When the electrical impulse travels down the pre-synaptic neuron it stimulates the release of molecules into the synapse. These molecules can then diffuse towards the post-synaptic neuron, and interact with its receptors in order to cause an electrical impulse in that neuron, which can then carry on to the next synapse - effectively conveying the information. 

RH
Answered by Robert H. Biology tutor

3793 Views

See similar Biology GCSE tutors

Related Biology GCSE answers

All answers ▸

Describe the reflex arc.


What is osmosis? A diagram may be useful for your explanation


Explain how temperature affects how enzymes work


What is a synapse?


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning