In this video, I explain ALL of the content required for the "Nerve Impulses" section for AQA A Level Biology. This includes: structure of a myelinated neuron, resting potential, action potentials, the all-or-nothing principle, the refractory period, transmission of action potentials in myelinated & non-myelinated neurons and factors affecting speed of conductance. Time stamps to each of these sections are in the comments. The content in this video also crosses over with other exam boards.

I also go through a few exam questions and explain their mark schemes.

Please leave a comment if you have any questions, I'll be more than happy to answer them!!! :)