Learning objectives
After completing this study unit you will be able to:
Blood is composed of 45% cells such as erythrocytes, leukocytes and platelets, and 55% blood plasma. Blood plasma consists mainly of water and contains proteins, antibodies, electrolytes and other substances.
Erythrocytes, also known as red blood cells, transport oxygen throughout the body. Leukocytes, or white blood cells, play a role in the immune system, while thrombocytes, also known as platelets, are responsible for blood clotting. Other tasks of the blood are the transport of nutrients, hormones and heat as well as maintaining the acid-base balance.
Watch the following video to learn more about its components and histological appearance:
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