Question

the sound made by the heart when its pumpsblood​

Answer 1

Answer:

Listen to the Lub-Dub

This sound comes from the valves shutting on the blood inside the heart. The first sound (the lub) happens when the mitral and tricuspid valves close. The next sound (the dub) happens when the aortic and pulmonary valves close after the blood has been squeezed out of the heart.

Answer 2

Answer:

It have potential energ