Trachea
D shaped lumen transversely
C shaped tracheal cartilage
trachealia muscle bridges the c edge gap
annular ligament in the trachae allow movement and stretching
Tracheal bifrucation into the 2 lungs carynga
thyroid gland sits on thyroid cartilage below cricoid cartilage (C6)
trachea ends at t4 vertebrea
bifrucation
left main and right main (extrapulmonary)
right has superior lobar bronchus (extrapulmonary) middle and inferior lobar bronchi (Intrapulmonary)
Extra pulmonary has typical c shaped cartilage configuration
left superior and inferior lobar bronchi.
segmental bronchi after lobar
bronchioles have no cartilage in them
terminal bronchioles then respiratory bronchioles
blood air barrier and the acinus
type i and type II pneumocytes