Vital capacity is the sum of which of the following? 1. ...

[nramada]

Vital capacity is the sum of which of the following?
 
  1. Residual volume
  2. Inspiratory capacity
  3. Expiratory reserve volume
  4. Inspiratory reserve volume
  5. Functional residual capacity
  a. 2 and 3 c. 2 and 5
  b. 1 and 4 d. 3 and 4

Question 2

The results of pulmonary function testing show a normal total lung capacity and decreased, but reversible, FEV1 and FEV25-75. The patient is a 22-year-old, nonsmoking man with a history of intermittent noisy breathing.
 
  Which of the following is most likely the cause of his problem?
  a. Asthma c. Pulmonary fibrosis
  b. Emphysema d. Severe restrictive pulmonary disease

[taylorsonier]

Answer to Question 1

ANS: A
The vital capacity is equal to the sum of the inspiratory capacity plus the expiratory residual vol-ume.

Answer to Question 2

ANS: A
Asthma is a disease that shows reversibility in the FEV1 and FEV25-75. This reversibility, coupled with the fact that he is an otherwise healthy, nonsmoking, 22- year-old with a history of inter-mittent noisy breathing, makes asthma the best choice as the most likely cause of the problem.

[nramada]

TYSM

[patma1981]

Excellent