Blood: The familiar red fluid in the body that contains white and red blood cells, platelets, proteins, and other elements. The blood is transported throughout the body by the circulatory system. Blood functions in two directions: arterial and venous. Arterial blood is the means by which oxygen and nutrients are transported to tissues while venous blood is the means by which carbon dioxide and metabolic by-products are transported to the lungs and kidneys, respectively, for removal from the body.

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  • Blood bank

    Blood bank: : A place where blood is collected from donors, typed, separated into components, stored, and prepared for transfusion to recipients. A blood bank may be a separate free-standing facility or part of a larger laboratory in a hospital. Separation of blood: Typically, each donated unit of blood (whole blood) is separated into multiple […]

  • Blood blister

    Blood blister: a blister full of blood due to a pinch, bruise or repeated friction. A blister is medically termed a vesicle. One that is more than 5 mm in diameter is called a bulla. The word “blister” entered English in the 14th century. It came from the Middle Dutch “bluyster”, blister and was a […]

  • Blood cleaner

    Blood cleaner: A process designed to eliminate most pathogens — viruses, bacteria and fungi — from donated blood. The process is termed “pathogen inactivation.” It depends upon the fact that three components of blood that are given in transfusions — red blood cells to carry oxygen, platelets to help blood clot and plasma for clotting […]

  • Blood clot

    Blood clot: A mass of coagulated blood. A blood clot can block a major blood vessel, causing stroke or other problems.

  • Blood clots

    Blood that has been converted from a liquid to a solid state. Also called a thrombus. The process by which a blood clot forms is termed coagulation. A blood clot, or thrombus, is stationary within a vessel or the heart. If it moves from that location through the bloodstream, it is referred to as an […]

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