Describe how the cellular components of mammalian blood are adapted to their functions/ Describe how human blood is adapted to its function.

-Plasma; is the fluid part of blood consisting of dissolved and undissolved substances; the plasma acts as a medium in which various substances are transported in the body; it acts as a medium in which various metabolic reactions occur; and plays a role in thermoregulation/ distributes heat;
-Platelets; contain proteins (e.g. thromboplatin/ thrombokinase enzyme); that help in blood clotting; preventing blood loss/ anemia; and prevents entry of pathogens;
-White blood cells; are irregular/ amoeboid in shape; they protect the body against attack by pathogens; by engulfing them; and releasing antibodies against pathogens; They are numerous; to enhance the body defense mechanism;
-Red blood cells; are biconcave in shape; to increase surface area for diffusion of gases/ squeeze through capillaries; they lack nucleus; to allow for packaging of more haemoglobin; they have haemoglobin; that has higher affinity for oxygen; they are numerous; to increase the surface area to transport more oxygen; have carbonic anhydrase; for loading and offloading of carbon (IV) oxide;