What is the series of events that occur when an action potential enters the presynaptic neuron

The membrane around the presynaptic neurone depolarises This depolarisation causes Ca2+ voltage-gated channels to open and Ca2+ influxesCa2+ causes vesicles with specific neurotransmitters to migrate to the membrane, fuse, and release the neurotransmitter into the synaptic cleft The neurotransmitters bind to specific neurotransmitter receptors on the post-synaptic membrane, this causes ion channels, specific to that receptor to open and cause depolarisation in the post-synaptic neurone A graded potential is produce, if it reaches the threshold potential, the action potential is fired up

JA
Answered by James A. Biology tutor

2531 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

Describe the synaptic transmission of a nerve impulse at the neuromuscular junction


What is DNA replication and how does the cell cycle regulate cell division?


Why does fetal haemoglobin have a higher affinity for oxygen than an adult haemoglobin?


What are the different types of enzymes and their roles involved in DNA replication?


We're here to help

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

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences