Medical Definition of angiosperm. : any of a class (Angiospermae) of vascular plants (as orchids or roses) that have the seeds in a closed ovary and include the monocotyledons and dicotyledonsâcompare gymnosperm.
Bilirubin (formerly referred to as haematoidin) is the yellow breakdown product of normal heme catabolism, caused by the body's clearance of aged red blood cells which contain hemoglobin. Bilirubin is excreted in bile and urine, and elevated levels may indicate certain diseases.
Bilirubin that is bound to a certain protein is called unconjugated, or indirect, bilirubin. Conjugated, or direct, bilirubin travels freely through your bloodstream to your liver. Most of this bilirubin passes into the small intestine, but a very small amount passes into your kidneys and is excreted in your urine.ilirubin is a substance made when your body breaks down old red blood cells, a normal process. Bilirubin is also part of bile, which your liver makes to help digest the food you eat. A small amount of bilirubin in your blood is normal. Healthy adults produce 250 to 350 milligrams (mg) of bilirubin each day.