A Healthy Body a Text book On Anatomy Physiology Hygiene Alcohol And Narcot
A Healthy Body a Text book On Anatomy Physiology Hygiene Alcohol And Narcot
C H Charles Henry Stowell
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109 The Number of Red Corpuscles. It is impossible for us to realize how many red corpuscles there are in the body ; in a small drop of blood there are as many as five millions. Their Use in the Body. The red corpuscles may be com- pared to little circular boats floating in the water of the blood. They go to the lungs, where they get very near the air, and take from it all the oxygen they can carry. Then they hasten away to some distant part of the body where some tissue needs it. To such tissu...e the corpuscles give up their oxygen while they are going through the capillaries ; then they hasten back to the lungs for another load. For this reason, the red cor- puscles are called oxygen carriers. Arterial Blood. When these corpuscles have a great deal of oxygen in them, as when they have just left the lungs, they are bright in color, and they make the whole blood appear bright scarlet. This bright-colored blood is found in the arteries, hence it is called arterial blood. The Pulmonary Veins.
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