Medical Definition of sphincter of Oddi. : a complex sphincter closing the duodenal orifice of the common bile duct.
Human blood is made of plasma (makes up 54.3% of the blood volume) and several kinds of cells (corpuscles); these are 1  â. erythrocytes (RBC) â 45% of blood by volume. 2  leukocytes (WBC) â 0.7% of blood by volume. 3  thrombocytes (platelets) â minute amounts.
Blood is composed of a fluid portion and a solid portion made of blood cells, also known as formed elements. About 45% blood is made up of blood cells. These are of three type â¦ s: erythrocytes (red blood cells), leukocytes (white blood cells), and thrombocytes (platelets).