SCIENCE
RESPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Both right and left lungs are composed of three lobes
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Bronchi divide to form bronchioles
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Capillary supply is abundant to facilitate gas exchange with the blood
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The alveoli are tiny air sacs arranged in clusters
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Detailed explanation-1: -The right and left lung anatomy are similar but asymmetrical. The right lung consists of three lobes: the right upper lobe (RUL), the right middle lobe (RML), and the right lower lobe (RLL). The left lung consists of two lobes: the left upper lobe (LUL) and the left lower lobe (LLL).
Detailed explanation-2: -The left lung is smaller because of the space taken up by the heart (see diaphragm for an image of this). Each lung is separated into lobes branching off the main bronchus; the right lung has three lobes, while the left has only two lobes.
Detailed explanation-3: -The lungs are soft, light, spongy, elastic organs that normally, after birth, always contain some air. If healthy, they will float in water and crackle when squeezed; diseased lungs sink.