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18 April, 03:42

The following are the main steps in the generation of the action potential. 1. Sodium channels are inactivated2. Voltage gated potassium channels open and potassium moves out of the cell, initiating repolarization. 3. Sodium channels regain their normal properties. 4. A grated depolarization brings an area of excitable membrane to threshold. 5. A temporary hyperpolarization occurs. 6. Sodium channel activation occurs. 7. Sodium ions enter the sell and depolarization occurs. What is the proper sequence of these events? A) 6,7,4,1,2,3,5B) 4,2,5,6,7,3,1C) 4,6,7,3,2,5,1D) 2,4,6,7,1,3,5E) 4,6,7,1,2,3,5

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  1. 18 April, 03:58
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    E) 4,6,7,1,2,3,5

    Explanation:

    Action Potential is the change that occurs due to electrical activity that is caused by movement of depolarizing current along the cells of the nerves or the membrane.

    Example of an Action Potential is Impulses that nerves generates to the nerve fibers to the muscles of the body.

    The stages in Action Potential are : hyperpolarization, depolarization, overshoot, and repolarization.
  2. 18 April, 04:49
    0
    E) 4,6,7,1,2,3,5

    Explanation:

    The correct sequence of events is as follows. A grated depolarization brings an area of excitable membrane to a threshold. Sodium channels are activated and open, allowing positively-charged sodium ions to pass through. The sodium ions then enter the cell, and depolarization of the negatively-charged cell membrane is initiated. Sodium channels are first inactivated. The voltage-gated potassium channels then open, allowing for potassium ions to move out of the cell, initiating repolarization. Sodium channels then regain their normal properties allowing the sodium ions to pass through and making the cell membrane repolarized again. The cell membrane will reach its resting membrane potential again. Afterward, a temporary hyperpolarization occurs.
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