NEW OCR Biology A 5.3.3-4 Nerve Impulses: Action Potentials, Local Currents and Saltatory Conduction

2 lessons in 1...

A step-by-step and detailed power point presentation which firstly addresses how a resting potential is created across the cell membrane of a neurone, followed by the sequence of events which leads to an action potential (from depolarisation, to repolarisation, to hyperpolarisation), and lastly how local circuits and salutatory conduction lead to efficient transmission of action potentials along the axon.

There is a word fill/ cloze starter on the structure and function of neurones as a recap from the previous lesson.

A worksheet requiring data analysis on speed of action potential in neurones is also included.

There are also multiple video links to animations on action potentials in the presentation, along with a set of practice questions to test students' understanding.

Lastly, I have included a fun, true or false quiz to assess that all objectives have been achieved

5.3.3-4(c) to understand the generation and transmission of nerve
impulses in mammals
To include how the resting potential is established
and maintained and how an action potential is
generated (including reference to positive feedback)
and transmitted in a myelinated neurone
AND
the significance of the frequency of impulse
transmission.