1. During an Action potential, Na+ enters the cell and causes the membrane voltage to become...

1. During an Action potential, Na+ enters the cell and causes the membrane voltage to become less negative. This process is called______________.

2. During Resting Membrane Potential of a cell, Na+ is more concentrated __________ whereas K+ is more concentrated ____________.

3. At the beginning of Repolarization, ______ channels close and ______ channels open.

4. What is the name of the muscle fiber organelle that is continuous with the sarcolemma and transmits an action potential through the inside of a cell?

5. Name the neurotransmitter that creates an action potential on the Motor End Plate of a muscle fiber.

Expert Solution

Sydney Mullin answered 1 year ago

why does na+ enter the cell during action potential?

Na+ enters nerve cells through a channel in the cell membrane when the cell is stimulated....

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Match the stage in the action potential with its voltage Na+ influx K+ outflux Na+ channels...

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Why doesn't the maximal membrane voltage (at the peak of the action potential) change with altered...

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1. What would happen if there were a blockage to voltage-gated Na+ channels during an action...

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1. The membrane is more permeable to K+ than to Na+: a. At resting membrane potential...

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Define resting membrane potential and action potential (1 point). Why is the resting membrane potential negative...

Define resting membrane potential and action potential (1 point). Why is the resting membrane potential negative and close to the K+ equilibrium potential when cells are at rest, and then positive and closer to the equilibrium potential of Na+ when activated (4 points).

Acetylcholine stimulates an action potential in the muscle cell membrane by: a) Opening chloride channels in...

Acetylcholine stimulates an action potential in the muscle cell membrane by: a) Opening chloride channels in the muscle cell membrane b) Opening channels in the neuromuscular junction which allow sodium to move out of the cell c) Opening channels in the neuromuscular junction which allow potassium to move out of the cell d) Opening channels in the neuromuscular junction which allow sodium to move in and potassium to move out, though sodium moves faster than potassium because both chemical and...

Graded potentials may: W. initiate an action potential. X. depolarize the membrane to the threshold voltage....

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What are the stages the membrane potential goes through during an action potential? Describe each stage...

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