MYTUTOR SUBJECT ANSWERS

3704 views

Outline the roles of synapses in the nervous system

Primarily, the function of synapses is allow communication between nerones in the nervous system.

Additionally, the structure of synapses means that they can perform further functions. Specific receptors for the neurotransmitter are found only on the post-synaptic membrane, and therefore this means that the impulse can only be transmitted through this membrane. As a result, this means that synapses ensure impulses travel in the correct direction through the nervous system.

As more neurotransitter diffuses across the synaptic cleft, the excitatory postsynaptic potential increases. It must reach the action potential of +40mV before an impulse is generated in the post-synaptic neurone. This means that weak impulses in the pre-synaptic neurone do not cause enough neurotransmitter to be released for an action potential in the post-syptic neurone to be generated. As a result, synapses are able to filter out low level stimuli that the body doesn't need to repond to, as such conserving energy. Furthermore, repeated low level stimuli can be amplified as each impulse arriving at the synapse causes the release of more neurotransmitter, resulting in one larger impulse in the post-synaptic neurone.Therefore, this allows the body to respond to the stimuli more effectively.

Lucy W. A Level Biology tutor, A Level Extended Project Qualification...

1 year ago

Answered by Lucy, an A Level Biology tutor with MyTutor


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

162 SUBJECT SPECIALISTS

£20 /hr

Charlotte N.

Degree: Medicine (Other) - Durham University

Subjects offered:Biology, Chemistry+ 2 more

Biology
Chemistry
-Personal Statements-
-Medical School Preparation-

“Hi, I'm Charlotte, I'm 20 and I'm currently studying medicine at Durham university. I have a lot of experience teaching- I worked as a teaching assistant during my gap year and I have 3 younger siblings, so I'm always helping someone!...”

Ozbil D. GCSE Biology tutor, A Level Biology tutor, GCSE Chemistry tu...
£22 /hr

Ozbil D.

Degree: Medicine (Bachelors) - Imperial College London University

Subjects offered:Biology, Physics+ 6 more

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

“WHO I AM - Originally from Cyprus, I've been living in London for almost a year now, studyingMedicine at Imperial College London.I love learning, and from a very young age, had a (sometimes weird) passion for teaching. So much that I ...”

£20 /hr

Jessica E.

Degree: Genetics (Masters) - Leeds University

Subjects offered:Biology, Chemistry

Biology
Chemistry

“Hello! My name is Jess. I am currently in my second year at Leeds University studying Genetics, in which I will go on to do a Masters. I am very enthusiastic about Science as I believe it really is a fascinating subject! I have a pass...”

About the author

£20 /hr

Lucy W.

Degree: Conservation Biology and Ecology (Masters) - Exeter University

Subjects offered:Biology, Science+ 4 more

Biology
Science
Maths
History
Extended Project Qualification
Chemistry

“Hello! My name's Lucy, and I'm a first year student at Exeter university, studying for aMSci in Conservation Biology and Ecology. I've always had a love and fascination for the outdoors and the world around me, and as I learnt more t...”

You may also like...

Posts by Lucy

Describe how a gene is used to synthesise a polypeptide

How can I write an effective conclusion to a factor based question?

Outline the roles of synapses in the nervous system

Other A Level Biology questions

Q: Describe the structure of an amino acid and the formation of a peptide bond.

What are the events that lead to genetic variation in gametes?

Explain the mechanism of breathing

What are the differences between exons and introns found in DNA.

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