Describe the process of synaptic transmission with regard to action potentials

the action potential arrives at the terminal of the axon. The arrival of the action potential will cause voltage gated calcium ions to open allowing the calcium ions to rush into the axon terminal. The arrival of the calcium ions allow synaptic vesicles to fuse with the axon terminal membrane, releasing neurotransmitter into the synaptic cleft. The neurotransmitter (most common one being acetylcholine) diffuses across the synaptic cleft and bind with the ligand-gated ion channel. This can cause inhibitory or excitatory effects.

Answered by Ali H. Biology tutor

532 Views

See similar Biology A Level tutors
Illustration of a video tutorial

Need help with Biology?

One to one online tuition can be a great way to brush up on your Biology knowledge.

Have a Free Meeting with one of our hand picked tutors from the UK’s top universities

Find a tutor

Related Biology A Level answers

All answers ▸

Name 3 effects that the sympathetic nervous system has on human physiology?


Describe the properties of primary protein structure.


Explain the roles of ATP and calcium ions in muscle contraction. (4 marks)


Explain how geographical isolation can result in speciation


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2022

Terms & Conditions|Privacy Policy