Hematology - Hematology Functions of Blood The circulatory...

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Hematology Functions of Blood The circulatory system includes the blood , heart and blood vessels . The cardiovascular components provide a pathway for pumped blood throughout the body. The cardiovascular components of the circulatory system will be discussed later. The study of blood is known as hematology . The blood transports all necessary fluids, gases, chemicals, nutrients, and wastes throughout the body. It functions in respiration , nutrient delivery, waste elimination, thermoregulation, immunity and defense, water and pH balance, hormone delivery and much more. Blood is composed of a clear extracellular fluid called plasma and the cellular components, including red blood cells , white blood cells and platelets . (See Figure 1). Two properties of blood that are important in its functioning are viscosity and osmolarity . The viscosity of blood determines how easily it flows through the blood vessels while osmolarity affects the diffusion rate of solutes and osmosis into and out of the tissues. Figure 1
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Hematology - Hematology Functions of Blood The circulatory...

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