Which type of epithelium mainly lines the alveoli of the mammalian lung?
Correct answer: D. Simple squamous epithelium
- A. Simple cuboidal epithelium
- B. Pseudostratified columnar epithelium
- C. Stratified squamous epithelium
- D. Simple squamous epithelium
Explanation
Alveoli are mainly lined by thin simple squamous cells called type I pneumocytes, which allow rapid diffusion of gases. Type II pneumocytes are fewer and produce surfactant, but they do not form most of the alveolar surface.
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About Veterinary Anatomy and Physiology
Covers the gross and microscopic structure of domestic animals, including bones, joints, muscles, organs, blood vessels and nerves. It explains how the respiratory, cardiovascular, digestive, urinary, nervous, endocrine and reproductive systems function, with attention to species differences and the relationship between anatomical structure and physiological processes.
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