The statement that describes the alveolus shown in Figure 1-1 is which of the following?
1. Requires more time to fill than a normal alveolus.
2. Fills more quickly than a normal alveolus.
3. Requires more volume to fill than a normal alveolus.
4. More pressure is needed to achieve a normal volume.
a. 1 and 3 only
b. 2 and 4 only
c. 2 and 3 only
d. 1, 3, and 4
ANS: B
The figure shows a low-compliant unit, which has a short time constant. This means it takes less time to fill and empty and will require more pressure to achieve a normal volume. Lung units that require more time to fill are high-resistance units. Lung units that require more volume to fill than normal are high-compliance units.
You might also like to view...
The blood is one of the primary ways for malignant neoplasms to metastasize from any organ because it circulates through all organs and body tissues
A) True B) False
Ketoprofen is considered a(n):
A) antihistamine B) antifungal C) anticoagulant D) NSAID