Jaundice develops when there is too much bilirubin in the blood. Bilirubin is a yellowish pigment found in hemoglobin. Hemoglobin is a protein in red blood cells that carries oxygen and gives blood its red colour. Our bodies constantly make new red blood cells. When old red blood cells break down, they release bilirubin.
a) provides structure to the Trachea. b) hairs on a cell that help it move around. C) Exchanges oxygen and carbon dioxide molecules to and from the blood stream
