what forces the movement of blood through the heart Chambers and into the vessels

Expert Solution

The blood flow through the heart and vessels

Right Side of the Heart

The deoxygenated blood enters the heart via two large veins called the inferior and superior vena cava which opens up from the body into the right atrium of the heart.

As the atrium contracts with force, blood flows from the right atrium into right ventricle through the open tricuspid valve. When the ventricle is full, the tricuspid valve shuts and prevents the blood from flowing backward into the atrium while the ventricle contracts. Then the blood leaves the heart through the pulmonic valve, into the pulmonary artery which carries the deoxygenated blood to the lungs where it is oxygenated.

Left Side of the Heart

The pulmonary vein carry and empties the oxygenated blood from the lungs into the left atrium of the heart. As the atrium contracts, the blood flows from left atrium into left ventricle through the open mitral valve or bicuspid valves. When the ventricle is full, the mitral valve shuts and prevents blood from flowing backward into the atrium while the ventricle contracts. As the ventricle contracts, blood exits the heart through the aortic valve, into the aorta and to the body.

Without the valves the force cannot be created and pumping blood would be like blowing air in a balloon with the hole in it, valves closes and built the pressure and when ventricle contacts the blood pump out with the pressure into the vessels.

Sydney Mullin answered 2 years ago

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