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.
Causes of Bilirubin in Urine. There are a number of possible causes for the presence of bilirubin in urine. Here are the most common causes: â¢ Blocked common bile duct â The common bile duct is where the bilirubin passes through for screening before it is transferred to the large intestines.