What pushes the blood out of the heart?

What pushes the blood out of the heart?

The right ventricle pumps the oxygen-poor blood to the lungs through the pulmonary valve. The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle through the mitral valve. The left ventricle pumps the oxygen-rich blood through the aortic valve out to the rest of the body.

What force is causing the blood to move through the heart?

Pressure is a measure of the force that the blood exerts against the vessel walls as it moves the blood through the vessels. Like all fluids, blood flows from a high pressure area to a region with lower pressure. Blood flows in the same direction as the decreasing pressure gradient: arteries to capillaries to veins.

How does blood flow in and out of the heart?

Blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs. Blood leaves the heart through the aortic valve, into the aorta and to the body. This pattern is repeated, causing blood to flow continuously to the heart, lungs and body.

What kind of blood flow through the heart?

1. Superior and inferior vena cavae and the coronary sinus 2. Rt. atrium 3. Tricuspid valve (also called the rt. atrioventricular valve) 4. Rt. ventricle 5. Pulmonary semilunar valve 6. Pulmonary trunk 7. Right and left pulmonary arteries 8. Lungs 7. Pulmonary veins 8. Lt. atrium 9.

Where does the blood go after it leaves the heart?

Blood then returns to the heart. First, blood flows into the right atrium, passes through the tricuspid valve, and makes its way into the right ventricle. It then moves through the pulmonic valve, into the pulmonary artery to the lungs.

What causes blood to flow backwards in the heart?

Blood flows from the right atrium into the right ventricle through the tricuspid valve. When the ventricle is full, the tricuspid valve shuts to prevent blood flowing backwards into the atrium. Blood leaves the heart through the pulmonic valve into the pulmonary artery and flows to the lungs.

Where does the blood enter the heart when it is depleted of oxygen?

It is now depleted of oxygen and enters the heart through the main vein, the vena cava, into the right atrium. The right atrium contracts and pushes the blood into the right ventricle which in turn contracts, pushing the blood out of the pulmonary artery to the lungs to become oxygenated.