REA-Crossword Puzzle Clues. Search through millions of crossword puzzle answers to find crossword clues with the answer REA. Type the crossword puzzle answer, not the clue, below. Optionally, type any part of the clue in the Contains box.Click on clues to find other crossword answers with the same clue or find answers for the REA crossword clue.earch through millions of crossword puzzle answers to find crossword clues with the answer REA. Type the crossword puzzle answer, not the clue, below.
Eventually, the bronchi become known as bronchioles â the smallest air tubes in the lungs. This system of air tubes can be thought of as an upside down tree, with the trachea being the main trunk and the bronchi and bronchioles being the branches. The medical term for all the air tubes is 'the respiratory tract'.
Bronchi: The bronchi are the two air tubes that branch off of from the trachea and carry atmospheric air directly into the lungs. Lungs: The main organ of the respiratory system is lungs. Lungs are the site in body where oxygen is taken into and carbon dioxide is expelled out.ntroduction to parts of the respiratory system and their function. Respiratory system consists of the organs that help to breathe. Respiration also known as breathing is the process which delivers oxygen from the external atmosphere to the body and removes the carbon dioxide from body and expels out.