Action potentials

Question 1

nervous - sending impulses

Answer 1

the nervous system communicates throughout the body by ‘sending’ impulses

• action potential or nerve impulse
• AP propogates along axon to axon terminals

Question 2

communication - action potentials

Answer 2

the body communicates through action potentials

• muscles contract due to electricity
• neuron membranes are excitable which enables them to generate and propagate action potentials - electrical impulses
• achieved through the opening and closing of channels in the cell membrane (primary Na and K channels)