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.
It also takes away waste and carbon dioxide from tissues. Blood is made up of blood plasma and various cells â red blood cells, white blood cells and platelets. Platelets help blood to clot. Hemoglobin is in red blood cells.