PATHOLOGY MCQ
RESPIRATORY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the large “branches” that air travels by to enter the lungs
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the little “branches” that carry air to the alveoli
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the little sacs that allow gas to exchange with the capillaries
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The tiny blood vessels that wrap around the alveoli
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Detailed explanation-1: -Alveoli are wrapped in tiny blood vessels called capillaries. The air you breathe in fills these air sacs with oxygen-rich air. This is where the exchange of gases occurs. Carbon dioxide is the gas we naturally produce and need to remove when our bodies use oxygen for energy.
Detailed explanation-2: -PULMONARY CAPILLARIES: Deoxygenated blood enters into the pulmonary arteries from the right side of the heart and is delivered to the pulmonary capillaries, the smallest blood vessels inside of the lungs, attached to the walls of the alveoli.
Detailed explanation-3: -The alveoli are surrounded by the alveolar-capillary membrane, which normally prevents liquid in the capillaries from entering the air sacs.
Detailed explanation-4: -What are capillaries? Capillaries are delicate blood vessels that exist throughout your body. They transport blood, nutrients and oxygen to cells in your organs and body systems. Capillaries are the smallest blood vessels in your vascular system.