Blood enters the right side of the heart via the inferior and superior vena cava and the left side of the heart via the pulmonary vein. It empties from the heart via the pulmonic valve on the right and the aortic valve on the left.Know More
The heart is made up of atria, ventricles, arteries, veins and valves. The atria and ventricles perform the pumping action, while the valves regulate blood flow. When the valves work properly, blood flows in only one direction. Both sides of the heart work together to ensure there is always an adequate supply of oxygen-rich blood available to the rest of the body.
On the right side of the heart, oxygen-poor blood enters through the inferior and superior vena cava before emptying into the right atrium. The blood then travels from the right atrium through the tricuspid valve and into the right ventricle. Blood leaves the right side of the heart via the pulmonic valve and empties into the pulmonary artery.
Oxygenated blood travels from the pulmonary vein to the left atrium. Then it flows through the mitral valve and into the left ventricle. Finally, it passes through the aortic valve and into the aorta. From there, the blood is pumped to other parts of the body.Learn more about Blood
A blood clot forming in the superior vena cava, a major vein leading to the heart, may cause superior vena cava syndrome, which impedes the flow of blood to the heart, often with serious results, states WebMD. SVCS is most commonly associated with lung cancer and Non-Hodgkin lymphoma, or NHL.Full Answer >
According to the University of Cincinnati's Clermont College, human beings have double circulation, which means that there are two separate loops through which blood travels. One loop, called the systemic loop, takes oxygenated blood to the body, while the other loop, called the pulmonary loop, carries blood to and from the lungs so that blood can absorb oxygen.Full Answer >
The National Heart, Lung and Blood Institute states that valves located between the atria and ventricles of the heart are responsible for stopping blood backflow. These valves are known as the tricuspid and mitral valves.Full Answer >
The flow of blood through the heart can be traced by injecting a dye into the arteries through a procedure known as an angiogram. Another procedure, cardiac catheterization, involves using a catheter to inject the dye. Magnetic resonance angiography or MRA, uses MRI technology.Full Answer >