Question Detail
Question
Which of the following is not derived from the mesoderm?
Correct Answer
Option B is the correct answer.
Detailed Explanation
The lungs are derived primarily from the endoderm (the lining of the respiratory tract) with contributions from mesoderm (connective tissue and blood vessels). The epithelial lining is endodermal. Muscles, bones, and the circulatory system are classic mesoderm derivatives.
Hint
Think about the inner lining of organs.