All of the following are derivatives of connective tissue except ___________?
Correct answer: B. Clara cells
- A. Endothelial cells
- B. Clara cells
- C. Fibroblast
- D. Mast cells
Explanation
Clara cells, now called club cells, are secretory epithelial cells of the bronchioles and arise from endoderm. Fibroblasts and mast cells are connective-tissue cells, while endothelial cells are mesoderm-derived vascular lining cells included in this embryological grouping.
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