Blood clots in the leg usually appear red and swollen, but they can take on different appearances depending on the location. In contrast, blood clots in the heart and lungs are not immediately visible.Know More
Blood clotting is sometimes essential to the body's processes. It prevents excessive bleeding when blood vessels are injured. Certain blood cells, called platelets, work together with the blood's plasma to stop bleeding by acting as a knot-shaped barrier over the injury.
Blood clots can also occur in veins and arteries, which must remain free-flowing as an essential attribute to the body's circulatory system. These types of clots may require medical attention.Learn More
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.Full Answer >
The American Red Cross reports that an adult human has about 10 pints of blood in his body, which converts to about 5 quarts. When a person donates blood, he typically only provides 1 pint per donation.Full Answer >
According to the Red Cross, blood type O is the universal blood donor. Group O blood does not contain either A or B antigens on its red blood cells. Therefore, it can be donated to any patient without complications.Full Answer >
Blood type is determined by the specific antigens found in the blood. B blood type contains only the B antigen on the red cells, with an A antibody in the plasma. A third antigen, known as the Rh factor, determines whether the blood type is negative or positive.Full Answer >