Which of the following correctly describes the sequence of events that occurs on

Question

Which of the following correctly describes the sequence of events that occurs once a neuron’s threshold for forming an action potential is reached?

A. Sodium enters the neuron, followed by potassium leaving the neuron.

B. Sodium enters the neuron at the same time that potassium leaves the neuron.

C. Potassium enters the neuron, followed by sodium leaving the neuron.

D. Potassium enters the neuron at the same time that sodium leaves the neuron.

Please choose your answer and explain your choice as indicated by the directions by explaining your thoughts with at least 175 words per entry at minimum to help demonstration elaboration of concepts.

Please answer in 250 words or less. NO Copy pasted answers.

Explanation / Answer

The following correctly describes the sequence of events that occur once a neuron’s threshold for forming an action potential is reached;

B. Sodium enters the neuron at the same time that potassium leaves the neuron

Ion Movement across the cell membrane leads to the creation of electrical signals, called action Potentials

1. Na+ influx depolarizes the cell membrane

2. K+ efflux repolarizes the cell membrane

3. it is followed by the release of neurotransmitter

4. Ca+2 influx leads to the exocytosis of neurotransmitter

5. Inhibition: Cl- influx hyperpolarizes the cell

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