How is an Action Potential transmitted across a synapse?

-An action potential arrives at the presynaptic membrane-Ca2+ ion channels open-Ca2+ ions diffues into presynaptic knob-Acetylcholine/ neurotransmitter in vesicles-Vesicles move towards presynaptic membrane-Vesicles fuse with membrane-Acetylcholine released by exocytosis into synaptic cleft-Acetylcholine diffuses across synaptic cleft-Acetylcholine binds to receptors on the post synaptic membrane-Receptors cause Na+ channels to open-Na+ diffuses into post synaptic membrane-If threshold is reached an action potential is initiated

Answered by Darcie W. Biology tutor

1870 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

How does oxidative phosphorylation produce ATP?


Describe the structure of a protein.


What is the induced-fit model of enzyme action


What are competitive and non-competitve inhibitors?


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 2013–2024

Terms & Conditions|Privacy Policy
Cookie Preferences