why left side of heart pumps blood harder then the right side?

It has to pump blood into your whole body.

The left ventricle is the largest and strongest chamber in your heart. The left ventricle's chamber walls are only about a half-inch thick, but they have enough force to push blood through the aortic valve and into your body.

thanks for you help

The reason why the left side of the heart pumps blood harder than the right side is because the left side of the heart is responsible for pumping oxygenated blood to the rest of the body, while the right side of the heart pumps deoxygenated blood to the lungs for oxygenation.

The left side of the heart receives oxygen-rich blood from the lungs via the pulmonary veins. This oxygenated blood is then pumped out into the systemic circulation through the aorta to supply oxygen and nutrients to all organs and tissues of the body. The body's tissues require oxygen to function properly, so the left side of the heart needs to generate enough force in order to push blood against the higher resistance of the systemic circulation.

On the other hand, the right side of the heart receives deoxygenated blood from the body's tissues through the superior and inferior vena cava. This deoxygenated blood is then pumped to the lungs through the pulmonary artery for oxygenation. The lungs have a lower resistance compared to the systemic circulation, so the right side of the heart does not need to generate as much force to pump blood to the lungs.

In summary, the left side of the heart pumps harder because it needs to generate enough force to push oxygenated blood through the systemic circulation and supply oxygen to the body's tissues, while the right side of the heart pumps with less force as it only needs to push deoxygenated blood to the lungs for oxygenation.