Summarize neuron communication from the moment of receptor stimulation to the response of an effector, such as a muscle fiber, and define neurotransmitter, resting membrane potential, and current. Define electrochemical

Summarize neuron communication from the moment of receptor stimulation to the response of an effector, such as a muscle fiber, and define neurotransmitter, resting membrane potential, and current. Define electrochemical gradients and the term “polarized”, and describe the electrochemical basis of the resting membrane potential including the function of the sodium-potassium pump in maintaining the resting membrane potential. Describe graded potentials including hyperpolarizing and depolarizing graded potentials. Describe action potentials (nerve impulses) including: Thresholds All-or-none principle Phases of action potential generation Refractory period