Respiratory Flashcards
What is the narrowest part of the adult airway?
The vocal cords.
What is the narrowest part of the pediatric airway?
The cricoid ring.
What are the dimensions of the trachea?
10 cm long and 2.5 cm in diameter.
Where does the trachea bifurcate?
At the carina (where the pt coughs if you touch it with the suction)
What is the angle of the right bronchi?
25 degrees
How many secondary bronchi are there in the left and right lungs?
3 right, 2 left (because the heart is taking up room on the left side)
Expiratory Reserve Volume (ERV)
Max air that can be moved out after a normal breath. 1-1.2L
Inspiratory Reserve Volume (IRV)
Max air that can move in after a normal breath. 3-3.3 L.
Tidal Volume (TV)
Volume that moves in and out with each breath.
About 0.5L, OR 7ml/kg of body weight.
Residual Volume (RV)
Air left inside the lungs after fully exhaling.
1.2L
Functional Residual Capacity
Volume of air left after regular expiration.
=ERV+RV
Inspiratory Capacity
Max air in after a normal breath out.
= TV+IRV
Vital Capacity
Largest amount of air that you can move in/out.
=TV+IRV+ERV+RV
Approx. 5.7-6.2 L
There is a cartilageonous ring around the trachea and esophagus, what does it do?
It supports them. There’s an opening at the back so that the esophagus can expand when you eat.
What part of the brain controls breathing?
The respiratory center in the brain stem.
Group of neurons in the pons and medulla.
