1a. Describe how the permeability of the axon membrane to Na 1and K 1 is regulated and how changes in permeability to these ionsaffect the membrane potential.
1b. Describe how gating of Na 1 and K 1 in the axon membraneresults in the production of an action potential.
1c. Explain the all-or-none law of action potentials, anddescribe the effect of increased stimulus strength on actionpotential production. How do the refractory periods affect thefrequency of action potential production?
1d. Describe how action potentials are conducted by unmyelinatednerve fibers. Why is saltatory conduction in myelinated fibers morerapid?
1e. Describe the location of neurotransmitters within an axonand explain the relationship between presynaptic axon activity andthe amount of neurotransmitters released.
1f. Describe the sequence of events by which action potentialsstimulate the release of neurotransmitters from presynapticaxons.
