Q. What is the normal range for adult respiratory rate at rest?
-
A.
8-12 breaths per minute
-
B.
12-20 breaths per minute
-
C.
20-30 breaths per minute
-
D.
30-40 breaths per minute
Solution
The normal respiratory rate for adults at rest is typically between 12 to 20 breaths per minute.
Correct Answer:
B
— 12-20 breaths per minute
Learn More →
Q. What is the primary function of surfactant in the lungs?
-
A.
Increase oxygen absorption
-
B.
Reduce surface tension
-
C.
Facilitate gas exchange
-
D.
Enhance lung elasticity
Solution
Surfactant reduces surface tension in the alveoli, preventing collapse and aiding in lung expansion.
Correct Answer:
B
— Reduce surface tension
Learn More →
Q. What is the primary muscle involved in the process of inhalation?
-
A.
Diaphragm
-
B.
Intercostal muscles
-
C.
Abdominal muscles
-
D.
Pectoral muscles
Solution
The diaphragm is the primary muscle that contracts to allow air to enter the lungs during inhalation.
Correct Answer:
A
— Diaphragm
Learn More →
Q. What is the primary site of gas exchange in the respiratory system?
-
A.
Bronchi
-
B.
Trachea
-
C.
Alveoli
-
D.
Larynx
Solution
The alveoli are the primary sites of gas exchange, where oxygen and carbon dioxide are exchanged between air and blood.
Correct Answer:
C
— Alveoli
Learn More →
Q. What is the term for the volume of air that remains in the lungs after a forced exhalation?
-
A.
Tidal volume
-
B.
Vital capacity
-
C.
Residual volume
-
D.
Inspiratory reserve volume
Solution
Residual volume is the amount of air that remains in the lungs after a person has exhaled forcefully.
Correct Answer:
C
— Residual volume
Learn More →
Q. Which condition is caused by the destruction of alveoli, leading to reduced gas exchange?
-
A.
Asthma
-
B.
Chronic bronchitis
-
C.
Emphysema
-
D.
Pneumonia
Solution
Emphysema is a condition characterized by the destruction of alveoli, which impairs gas exchange.
Correct Answer:
C
— Emphysema
Learn More →
Q. Which condition is characterized by the inflammation of the airways, leading to difficulty in breathing?
-
A.
Asthma
-
B.
Pneumonia
-
C.
Bronchitis
-
D.
Emphysema
Solution
Asthma is characterized by inflammation and narrowing of the airways, causing difficulty in breathing.
Correct Answer:
A
— Asthma
Learn More →
Q. Which gas is primarily exchanged in the alveoli of the lungs?
-
A.
Oxygen
-
B.
Carbon dioxide
-
C.
Nitrogen
-
D.
Hydrogen
Solution
Oxygen is primarily exchanged in the alveoli, where it diffuses into the blood while carbon dioxide diffuses out.
Correct Answer:
A
— Oxygen
Learn More →
Q. Which gas law explains the relationship between the pressure and volume of gases in the lungs?
-
A.
Boyle's Law
-
B.
Charles's Law
-
C.
Dalton's Law
-
D.
Henry's Law
Solution
Boyle's Law states that the pressure of a gas is inversely proportional to its volume when temperature is constant.
Correct Answer:
A
— Boyle's Law
Learn More →
Q. Which part of the brain regulates the rate and depth of breathing?
-
A.
Cerebrum
-
B.
Cerebellum
-
C.
Medulla oblongata
-
D.
Thalamus
Solution
The medulla oblongata is responsible for regulating the rate and depth of breathing.
Correct Answer:
C
— Medulla oblongata
Learn More →
Showing 1 to 10 of 10 (1 Pages)
