2. Two identical neurons have been isolated and are bathed separately in fluid with an ion
concentration typical of extracellular fluid in nervous tissue,
Neurotransmitter is added to the extracellular fluid of each neuron. Changes in
membrane potential are observed along the length of the axon of neuron A. No change
in membrane potential is observed anywhere on the axon of neuron B.
Explain why these different results were observed in the neurons. Assume that the
axons are identical, and are capable of functioning normally.
Describe what is happening along the axon of neuron A. Include ions, channels, and
membrane potential in your answer.
3. Explain what ion flow is and describe 2 locations where ion flow is used to assist in signal
transmission along a neuron.
