MYTUTOR SUBJECT ANSWERS

692 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

212 SUBJECT SPECIALISTS

£24 /hr

Sanskrithi S.

Degree: Medicine (Other) - Oxford, University College University

Subjects offered:Biology, Maths+ 6 more

Biology
Maths
Chemistry
.UKCAT.
.BMAT (BioMedical Admissions)
-Personal Statements-
-Oxbridge Preparation-
-Medical School Preparation-

“I am a third year medical student at the University of Oxford whose aim is to support and guide students in their science studies.”

MyTutor guarantee

|  4 completed tutorials

£22 /hr

Lucy W.

Degree: Physiotherapy BSc (Bachelors) - Cardiff University

Subjects offered:Biology, Physical Education

Biology
Physical Education

“Hi, I’m Lucy! I am an enthusiastic first year Physiotherapy student at Cardiff University with a passion for all things active and scientific. I thoroughly enjoy Biology and Physical Education and having just sat my exams in the summer...”

£20 /hr

Sophie C.

Degree: Medicine (Other) - Bristol University

Subjects offered:Biology, Chemistry+ 4 more

Biology
Chemistry
.UKCAT.
.BMAT (BioMedical Admissions)
-Personal Statements-
-Medical School Preparation-

“First year Medical student at the University of Bristol. Enthusiastic and approachable!”

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

Describe the way in which the normal heart beat is initiated and controlled

How does DNA replication take place?

What is respiration and why is it needed?

Explain why the activity of amylase rapidly decreases above pH 7.

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