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.
The four main components of blood are red blood cells, white blood cells, platelets, and plasma. Blood is made up of erythrocytes (red bllod cells), leucocytes (white blood â¦ cells) and thrombocytes (platelets).