Home MCQs Cases Flashcards Your Feedback Become a reviewer More student books Student Apps Join an e-mail list Buy/find out more
Multiple Choice: Chapter 19 Lung defence mechanisms Question 19.1. Physical defences in the upper airways a include cilia in the nasopharynx that catch large particles b prevent particles greater than 1 μm entering the bronchi c include humidification of air to prevent the epithelium from drying out d are independent of mucus.