Flashcards in Tracheobronchial Tree Deck (19):
Where does the trachea begin?
Lower border of cricoid cartilage (C6)
The trachea is a rigid fibrocartilage tube lined by what?
Pseudo-stratified ciliated columnar epithelium
The trachea is held open by what?
15-20 U shaped rings
What is the size of the trachea?
5 inches long
1 inch in diameter
Each ring is incomplete where?
Posteriorly linked by trachealis muscle
Where does the trachea end?
Sternal angle T4/5 by bifurcating into the R and L bronchi
There is a v-shaped cartilage that marks the bifurcation of the trachea called what?
What lies behind the trachea?
The 2nd to 4th tracheal rings are crossed anteriorly by what?
Isthmus of thyroid gland
How is the R bronchus different from L?
The L bronchus is what compared to R?
Aspirated foreign bodies are more likely to go into where?
Middle lobe of R primary bronchus
The R main bronchus divides into what?
3 secondary bronchi
The L main bronchus divides into what?
2 secondary bronchi
Each lobar bronchus divides within each lobe into what?
Each segmental bronchus feeds a what?
The segmental bronchus continues to subdivide until it reaches what?
From the terminal bronchioles they lead to what?