Which of the following is NOT a factor involved in the determination of resting membrane potential? Select one: O a. concentration of sodium b. concentration of potassium c. presence of sodium channels d. presence of potassium channels e. concentration of sodium receptors Which of the following would NOT be found within the gray matter of the spinal cord? Select one: a. interneurons b. afferent neurons' cell bodies O c. efferent neurons' cell bodies d. efferent neurons' dendrites O e. axon terminals from afferent neurons If the resting neuron's membrane becomes more permeable to potassium ions: Select one: O a. the inside of the membrane will become more positively charged b. the membrane will depolarize more rapidly c. the membrane will become hypopolarized d. the hyperpolarization at the end of the action potential will not be able to occur e. the membrane will become hyperpolarized