Answer:
The inward flow of sodium ions increases the concentration of positively charged cations in the cell and causes depolarization, where the potential of the cell is higher than the cell's resting potential. The sodium channels close at the peak of the action potential, while potassium continues to leave the cell.
Answer:
Position the person on his or her back.
If there are no injuries and the person is breathing, raise the person's legs above heart level — about 12 inches (30 centimeters) — if possible. Loosen belts, collars or other constrictive clothing. To reduce the chance offainting again, don't get the person up too quickly.
Answer: The lower respiratory system moves oxygen into the blood; the circulatory system delivers blood to the body.
Explanation:
An effective way to replenish glycogen stores after an event is to consume A. 1 to 1.5 grams of carbohydrate per kilogram of body weight within 30 minutes.
This is important to prevent any loss of focus or mood swings through out the day following the event.
