PATH 370 WEEK 4 TEST | QUESTIONS AND ANSWERS | 2026 UPDATED | 100% CORRECT - WCU

,
, PATH 370 WEEK 4 TEST | QUESTIONS AND
ANSWERS | 2026 UPDATED | 100%
CORRECT - WCU.


SECTION 1: OBSTRUCTIVE PULMONARY DISORDERS
(Questions 1-15)
Q1. All obstructive pulmonary disorders are characterized by:

 A) Decreased residual volume
 B) Resistance to airflow
 C) Increased lung compliance
 D) Decreased FEV1/FVC ratio only

Correct Answer: B

Rationale: All obstructive pulmonary disorders (asthma, COPD, chronic
bronchitis, emphysema) are characterized by resistance to airflow due to
airway narrowing or obstruction . This results in decreased expiratory flow
rates and air trapping.

Q2. The increased anterior-posterior chest diameter associated with
obstructive lung disease is caused by:

 A) Increased pulmonary blood flow
 B) Increased expiratory flow rates
 C) Increased residual lung volumes
 D) Decreased chest wall compliance

Correct Answer: C

Rationale: The barrel chest appearance in obstructive lung disease results
from air trapping and hyperinflation of the lungs . Increased residual volume
leads to overexpansion of the chest cage, increasing the AP diameter.

Q3. Airway obstruction in chronic bronchitis is primarily due to:

 A) Bronchospasm only
 B) Thick mucus, fibrosis, and smooth muscle hypertrophy