Repolarization of an axon during an action potential is produced by a. inward diffusion of Na' b. outward diffusion of $\mathrm{K}^{+}$ c. inward active transport of $\mathrm{Na}^{+}$ d. active extrusion of $\mathrm{K}^{+}$
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This causes the inside of the axon to become more positive relative to the outside. Repolarization is the process of returning the axon's membrane potential back to its resting state (around -70 mV). This is achieved by the opening of voltage-gated Show more…
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The influx of Na+ ions into the axon through voltage-gated ion channels is characteristic of which phase of an action potential? A. Hyperpolarization B. Depolarization C. Repolarization
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In the propagation of a nerve impulse: a. the refractory period begins as the $\mathrm{K}^{+}$ channel opens, allowing $\mathrm{K}^{+}$ ions to flow outward along their concentration gradient. b. $\mathrm{Na}^{+}$ ions flow out of the axon with their concentration gradient. c. positive charges lower the membrane potential to its fowest action potential. d. gated $\mathbb{K}^{+}$ channels open at the same time as the activation gate of $\mathrm{Na}^{+}$ channels closes. e. the depolarizing stimulus lowers the membrane potential to open the Na $^{+}$ gates.
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