Which of these is not a pathway for organisms to enter the lungs in the adult?

Question

Quizplus · Accepted Answer

The lymphatic system does not connect directly to the lungs, therefore organisms cannot enter the lungs from the lymphatic system in the adult. Aspiration occurs when foreign material enters the lungs due to swallowing or vomiting. Inhalation is the primary pathway for breathing in oxygen and other substances into the lungs. Organisms can enter the lungs from the blood if they are circulating in the bloodstream.

Which of These Is Not a Pathway for Organisms to Enter