A-Level Biology Specification

Edexcel B 9BI0

Section 9.5: Nervous transmission

Are you studying this syllabus?

You can track your progress by adding it to your account.

Add syllabus

#9.5i

Understand how the properties of the axon membrane and the transport of Na+ ions and K+ ions result in a resting potential.

#9.5ii

Understand how an action potential is formed and how it is propagated along an axon.

#9.5iii

Understand why the speed of transmission along myelinated axons is greater than along non-myelinated axons, including the role of saltatory conduction.

#9.5iv

Understand the structure and function of a synapse, including the role of transmitter substances limited to acetylcholine and noradrenaline.

#9.5v

Understand the formation and effects of excitatory and inhibitory postsynaptic potentials.