Review of the Blood System

18.2.1 Review of the Blood System The blood system consists of red blood cells, white blood cells, platelets and plasma (blood water).

Function of the Blood System:

 To carry food and water to the tissues.

 To carry oxygen to the tissues.

 To remove carbon dioxide and other waste products from the tissues.

 To protect the body against bacteria and toxins (Immunity, See page 89).

 To provide necessary materials to the glands (to make secretions).

 To distribute hormones and enzymes.

 To transport heat throughout the body.

 To stop bleeding by making the blood clot.