What body parts compose the lower respiratory tract?

What body parts compose the lower respiratory tract?

Richard Sheldon (Medical Advisor to the CA State Respiratory Care Board) gives expert video advice on: How is a pulmonologist different from other doctors?; What is the difference between the nasal cavity and the sinuses? and more...

Once you cross into the chest cavity or just below the voice box, right here where the notches for your vocal cords, then it hits down into the trachea right and left main next to the bronchi. That then divides off down into the alveoli thats the lower tree.