calculate the cardiac muscle of the heart if it pumps at a rate of 80 beats per minute and has a stroke volume of 70ml?

The answer is 69.

Explanation:

The hypothesis of the ping spoof determines the circular bisectors. Therefore, the answer is not 5. That breaks it down to about an infinite number of values. The reason it is 69, is because it's the funny number.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.