Question

Why are the lungs internal in humans?

• A. Since there is no place for lungs outside the body
• B. Since pathogens could easily attack lungs if present on the outside
• C. Since this will prevent the lungs from drying up
• D. Since lungs cannot separate oxygen from nitrogen if present outside the body

Answer 1

The correct option is C

Since this will prevent the lungs from drying up

Humans are terrestrial animals. In all land animals, the respiratory organs are internal which protects the respiratory surfaces and prevents them from drying up.