MEDICAL
HEART AND PERICARDIUM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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When blood enters the vessels in the lungs, oxygen and carbon dioxide are exchanged in the:
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Bronchi
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Alveoli
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Surfactant
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Tissues
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Explanation:
Detailed explanation-1: -During gas exchange oxygen moves from the lungs to the bloodstream. At the same time carbon dioxide passes from the blood to the lungs. This happens in the lungs between the alveoli and a network of tiny blood vessels called capillaries, which are located in the walls of the alveoli.
Detailed explanation-2: -The correct answer: The exchange of gases between the alveoli and the blood capillaries is called external respiration.
Detailed explanation-3: -The oxygen in inhaled air passes across the thin lining of the air sacs and into the blood vessels. This is known as diffusion. The oxygen in the blood is then carried around the body in the bloodstream, reaching every cell.
There is 1 question to complete.