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Question

Compare the functioning of alveoli in the lungs and nephrons in the kidney with respect to their structure and functioning


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Solution

Alveoli:

The structural and functional unit of the lung is an alveolus and is found in the respiratory system.

Nephrons:

The structural and functional unit of the kidney is a nephron and is found in the excretory system.

Alveoli

Nephrons

  1. It is a part of the respiratory system.
  1. It is a part of the excretory system.
2. These are tiny sac-like structures. 2. It consists of glomerulus and tubules.
3. They perform the function of gaseous exchange. 3. It facilitates blood filtering and urine output and the glomerular filtrate travels through them.
4. The structures resemble air sacs in appearance. 4. They resemble tubes.
5. They have a grape-like appearance. 5. They have a long, thin tube-like appearance.
6. They transfer the blood to the pulmonary veins. 6. They transfer the blood to the renal veins.
7. There are about 480 million alveoli in the lungs. 7. In the kidneys, there are about 1.5 million nephrons.


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