The respiratory system - The lungs and the Trachea - Trachea and principal Bronchi Flashcards
1
Q
What does the trachea bifurcate into?
A
Right and left main bronchi
2
Q
Where does the trachea extend from, at what level and what does it branch into?
A
Extends from the larynx (level C6) to the two primary bronchi (level with T4)
3
Q
What surrounds the trachea?
A
15 - 20 C shaped rings of hyaline cartilage.
4
Q
How are the tracheal rings completed posteriorly
A
By smooth muscle, trachealis muscle
5
Q
What structure lies posterior to the trachea?
A
The oesophagus
6
Q
What is the function of the trachealis muscle
A
Bridges the gap between oesophagus and trachea
7
Q
At what level does the primary bronchi enter the lungs?
A
level with T6
8
Q
What is the carina?
A
Division of the bronchi
9
Q
Why is the right principle bronchus shorter and wider than the left?
A
Food enters the right lung
