Given a scientific question, generate an incorrect answer to the given question. The incorrect answer should be a plausible alternative to the correct answer. The answer should be some other item belonging to the same category as the correct answer but should be incorrect.

What organs have tiny tubes leading to and from elastic air sacs that improve airflow and oxygen uptake?
ovaries

If only one atom of a specific type is present what is not used?
covalent bond

A hair grows out of a follicle and passes through what before extending above the skin surface?
dermis