the heart may become larger when an aerobic fitness program is followed.how does this benefit the body?
a.the heart can work more efficiently
b.the heart and lungs feel better
c.the heart can use more ATP
d.the heart and lungs look better when x-rayed
my answer is a
Looks OK!
Your answer, option a, is correct. When an aerobic fitness program is followed, the heart may become larger, which benefits the body because the heart can work more efficiently.
Now, let me explain how I arrived at this answer. Aerobic exercise, such as running or cycling, increases the heart rate and causes the heart to pump more blood. This increased demand on the heart leads to a phenomenon called cardiac hypertrophy.
Cardiac hypertrophy refers to an increase in the size of the heart muscle cells and overall size of the heart. This enlargement allows the heart to pump a larger volume of blood with each beat, which results in an increased stroke volume (the amount of blood pumped out of the heart with each beat).
As a result, the heart becomes more efficient at delivering oxygen and nutrients to the body's tissues and organs. This enhanced efficiency can improve overall cardiovascular fitness, endurance, and exercise capacity.
In summary, when the heart becomes larger due to following an aerobic fitness program, it can work more efficiently, leading to improved cardiovascular function and overall benefits to the body.