The terminal bronchioles end in bunches of thin walled sacs called
- A. glomeruli
- B. villi
- C. cisternae
- D. alveoli
Explanation
Alveoli hang in grape like clusters at the end of the airways, each wrapped in capillaries. Glomeruli filter blood in the kidney and villi absorb in the intestine, so similar sounding structures serve different systems.
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