Symbols Flashcards
1
Q
V (T)
A
Tidal Volume ~0.5L
- V of a normal breath at rest
2
Q
IRV
A
Inspiratory reserve volume ~2-3.5L
- the additional volume that can be inspired at the en of a normal tidal inspiration
3
Q
VC
A
Vital Capacity ~5.5L
- 2 reserve volumes + tidal volume
- VC= IRV + ERV + V (T)
4
Q
V (R)
A
Residual volume ~1.5L
- V of air left in the lungs after maximal expiration
5
Q
FRC
A
Functional reserve volume ~2.5L
- Volume of air left in the lungs after a NORMAL expiration
- FRC = ERV + V(R)
6
Q
ERV
A
Expiratory reserve volume ~1.5L
- the additional volume that can be expired at the end of a normal expiration
7
Q
TLC
A
Total lung capacity
- Max volume of air that can be contained in the lungs
8
Q
V (D)
A
Anatomical dead space ~0.15L
- the total volume of the airways that do not participate in gaseous exchage because of the absence of gas exchange structures (eg. large conducting ariways w thick mucous membrane)
9
Q
Physiological dead space
A
- Total volume of the airways that do not participate in gaseous exchange for anatomic and functional reasons
- It includes any alveolar volume that is not ventilated but not perfused
