Work in a mine is known to cause inhalation of large amounts of coal dust. Inhaled coal dust can be detected in the following pulmonary cells:

Answer options

1. Pericapillary cells
2. Secretory epithelial cells
3. Respiratory epithelial cells
4. Capillary endothelial cells
5. Alveolar macrophages

Explanation

Alveolar macrophages ingest foreign materials in the lungs.