MYTUTOR SUBJECT ANSWERS

616 views

Outline how nerve impulses are transmitted along a nerve fibre.

1. Sodium (voltage-gated) channels open and Nadiffuse into neuron (down concentration gradient).

2. Inside of neuron becomes positive compared to the outside, so potential is reversed = depolarization.

3. Wave of depolarization moves down the membrane.

4. Potassium channels open and Kdiffuse out down the concentration gradient.

5. Inside becomes negative compared with outside, potential across membrane restored = repolarization.

6. Active transport K(into neuron) and Na(out of neuron) restores resting potential.

Paulina W. IB History tutor, IB Biology tutor, IB Spanish tutor

11 months ago

Answered by Paulina, a GCSE Biology tutor with MyTutor


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

380 SUBJECT SPECIALISTS

£22 /hr

Eleanor H.

Degree: Biochemistry (Bachelors) - Bristol University

Subjects offered:Biology, Maths+ 1 more

Biology
Maths
Chemistry

“ABOUT ME: I am a biochemistry student, currently studying at the University of Bristol, and have had a passion for the natural sciences from a very young age. I am patient, hardworking and experienced, having tutored students in Maths...”

£24 /hr

Steven A.

Degree: Bioscience (Masters) - Durham University

Subjects offered:Biology, Science+ 5 more

Biology
Science
Maths
Human Biology
English
Chemistry
-Personal Statements-

“Hi! I'm Steven and studying Biomedical Science at Durham. I'm friendly, approachable, and passionate for my subjects.”

£22 /hr

Abigail C.

Degree: Biochemistry (Bachelors) - Bath University

Subjects offered:Biology

Biology

“I am a Biochemistry student at the University of Bath. I have a great passion for biology and love explaining concepts in a fun way with images and diagrams.”

About the author

Paulina W. IB History tutor, IB Biology tutor, IB Spanish tutor

Paulina W.

Currently unavailable: for regular students

Degree: International Relations (Bachelors) - Exeter University

Subjects offered:Biology, Spanish+ 1 more

Biology
Spanish
History

“About me I am a 2016 IB Diploma Programme alumni and first year International Relations student at the University of Exeter.I am very passionate about subjects I am teaching and I hope to pass some of my love for them to you. I a...”

You may also like...

Posts by Paulina

In what ways and to what extent, was propaganda important in the rise and rule of Hitler?

Outline how nerve impulses are transmitted along a nerve fibre.

Other GCSE Biology questions

How are bacteria genetically modified for human benefit?

What are the differences between mitosis and meiosis?

List 3 differences between a plant cell and an animal cell

Explain the sequence of the carbon cycle:

View GCSE 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