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.
This category includes red blood cells, white blood cells, and platelets. The rest of the blood is composed of blood plasma, or simply plasma. Plasma is a pale-yellowish, watery solution that suspends all of the other parts of the blood.It makes up about 55% of the total volume of our blood.Plasma itself is made up of 91.5% water.he rest of the blood is composed of blood plasma, or simply plasma. Plasma is a pale-yellowish, watery solution that suspends all of the other parts of the blood. It makes up about 55% of the total volume of our blood. Plasma itself is made up of 91.5% water.