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Introduction to the cardiovascular system - blood

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Blood cells

This photo shows a red blood cell and a white blood cell.
A single drop of blood contains millions of red blood cells, white blood cells, and platelets. One of each type is shown here (from left to right) isolated from a scanning electron micrograph.

Chapter objectives

After studying this chapter, you will be able to:

  • Identify the primary functions of blood, its fluid and cellular components, and its physical characteristics
  • Identify the most important proteins and other solutes present in blood plasma
  • Describe the formation of the formed element components of blood
  • Discuss the structure and function of red blood cells and hemoglobin
  • Explain the significance of AB and Rh blood groups in blood transfusions
  • Discuss a variety of blood disorders

The human body needs blood to deliver nutrients to and remove wastes from our trillions of cells. The heart pumps blood throughout the body in a network of blood vessels. Together, these three components—blood, heart, and vessels—makes up the cardiovascular system. This chapter focuses on the medium of transport: blood.
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Source:  OpenStax, Human biology. OpenStax CNX. Dec 01, 2015 Download for free at http://legacy.cnx.org/content/col11903/1.3
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