The cells of the SA node at the top of the heart are known as the pacemaker of the heart because the rate at which these cells send out electrical signals determines the rate at which the entire heart beats (heart rate). The cells that create these rhythmic impulses, setting the pace for blood pumping, are called pacemaker cells, and they directly control the heart rate. They make up the cardiac pacemaker, that is, the natural pacemaker of the heart. Hope this helps!
the answer is the medulla oblongata
Answer:
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I picked Maryland btw
Explanation:
Answer:
The correct answer is option D. VO2 max. It is the amount at which the an athlete can take-up maximum oxygen during intense workout.
Explanation:
VO2 max also known as maximal oxygen uptake is a method to determine how much intake of oxygen is taken by an athlete during extreme workout.
The more the athlete works out the more energy will be produced in the cells, also known as ATP.
Sometimes VO2 max is confused by lactose threshold, where the lactate is build up in the muscles causing pain.
