MYTUTOR SUBJECT ANSWERS

611 views

Describe what happens at a chemical synapse

As the action potenial reaches the synaptic terminal depolarisation causes voltage-gated Ca2+ channels to open. The opening of these ion channels causes an influx of Ca2+ ions because of the high concentration gradient which is maintained across the cell membrane. Ca2+ in the synpatic terminal causes vesicles containing neurotransmitter molecules to move towards the membrane, and neurotransmitters to be released into the cleft by exocytosis. The neurotransmitter molecules diffuse across the cleft and bind to complementary receptors on the post-synaptic cell. The binding of neurotransmitters causes ion channels associated with the receptors to open, allowing the influx of ions. If sufficient ions enter the post-synaptic cell, an action potential will be generated. 

Joel D. A Level Biology tutor, GCSE Biology tutor, GCSE Science tutor

2 years ago

Answered by Joel, an A Level Biology tutor with MyTutor


Still stuck? Get one-to-one help from a personally interviewed subject specialist

175 SUBJECT SPECIALISTS

£30 /hr

Jessica-Lily H.

Degree: MRes Experimental Neuroscience (Masters) - Imperial College London University

Subjects offered:Biology, Psychology

Biology
Psychology

“Top tutor from a world leading university- ready to do all I can to help you get your head around that tricky subject!”

£20 /hr

Abhinav T.

Degree: Medicine (Other) - University College London University

Subjects offered:Biology, Physics+ 2 more

Biology
Physics
Maths
Chemistry

“Confirming understanding by verbal confirmation and communication so as to ensure clarity and confidence during the learning process and progression.”

MyTutor guarantee

£24 /hr

Haider M.

Degree: Medicine (Bachelors) - Exeter University

Subjects offered:Biology, Physics+ 7 more

Biology
Physics
Maths
Extended Project Qualification
Chemistry
.UKCAT.
.BMAT (BioMedical Admissions)
-Personal Statements-
-Medical School Preparation-

“A bit about me I am currently in my 2nd year of medical school at the University of Exeter. I really enjoy learning about science, especially the science of health disease, and would love nothing more than to pass down this knowledge ...”

About the author

Joel D.

Currently unavailable: for regular students

Degree: Neuroscience (Bachelors) - Bristol University

Subjects offered:Biology, Science

Biology
Science

“I'm a recent Neuroscience graduate from the University of Bristol. Ready to help you with your Science qestions - get in touch!”

MyTutor guarantee

You may also like...

Posts by Joel

Describe what happens at a chemical synapse

What's the difference between the cell wall and cell membrane?

Other A Level Biology questions

Putting bee honey on a cut kills bacteria. Honey contains a high concentration of sugar. Use your knowledge of water potential to suggest how putting honey on a cut kills bacteria. (AQA BIOL1)

How is air breathed in to the lungs so that oxygen reaches the gas exchange surfaces?

Describe the structure of DNA.

How is an electrical impulse transmitted through the heart?

View A Level Biology tutors

We use cookies to improve your site experience. By continuing to use this website, we'll assume that you're OK with this. Dismiss

mtw:mercury1:status:ok