Choose the correct sequence of events along an axon: a. Resting potentials are propagated along a stimulated axon, causing a very small action potential. b. A threshold stimulus opens K+ channels and the ions diffuse in, depolarizing the cell membrane. Then Na+ channels open, Na+ exits, and the cell membrane repolarizes, generating an action potential that stimulates adjacent cell membrane, forming the impulse. c. A threshold stimulus opens Na+ channels and the ions diffuse in, depolarizing the cell membrane. Then K+ channels open, K+ exits, and the cell membrane repolarizes, generating an action potential that stimulates adjacent cell membrane, forming the impulse. d. A threshold stimulus opens Na+ channels and the ions diffuse in, depolarizing the cell membrane. Then K+ channels open, K+ exits, and the cell membrane repolarizes, generating an action potential that inhibits adjacent cell membrane, forming the impulse
Choose the correct sequence of events along an axon: a. Resting potentials are propagated along a stimulated axon, causing a very small action potential. b. A threshold stimulus opens K+ channels and the ions diffuse in, depolarizing the cell membrane. Then Na+ channels open, Na+ exits, and the cell membrane repolarizes, generating an action potential that stimulates adjacent cell membrane, forming the impulse. c. A threshold stimulus opens Na+ channels and the ions diffuse in, depolarizing the cell membrane. Then K+ channels open, K+ exits, and the cell membrane repolarizes, generating an action potential that stimulates adjacent cell membrane, forming the impulse. d. A threshold stimulus opens Na+ channels and the ions diffuse in, depolarizing the cell membrane. Then K+ channels open, K+ exits, and the cell membrane repolarizes, generating an action potential that inhibits adjacent cell membrane, forming the impulse
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