HUMAN PHYSIOLOGY
BREATHING AND RESPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Red blood cells transport oxygen from the cappilaries surrounding the alveoli towards the heart
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Red blood cells transport carbon dioxide from the cappilaries surrounding the alveoli towards the heart
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Red blood cells transport carbon dioxide away from the heart towards the capillaries surrounding the alveoli
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The alveoli are very moist to allow gases to diffuse into the blood stream
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Detailed explanation-1: -What are red blood cells? Red blood cells, also known as erythrocytes, deliver oxygen to the tissues in your body. Oxygen turns into energy and your tissues release carbon dioxide. Your red blood cells also transport carbon dioxide to your lungs for you to exhale.
Detailed explanation-2: -Carbon dioxide can be transported through the blood via three methods. It is dissolved directly in the blood, bound to plasma proteins or hemoglobin, or converted into bicarbonate. The majority of carbon dioxide is transported as part of the bicarbonate system.
Detailed explanation-3: -The walls of the alveoli share a membrane with the capillaries. That’s how close they are. This lets oxygen and carbon dioxide diffuse, or move freely, between the respiratory system and the bloodstream.