Respiratory System Practice Test

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By — McGraw-Hill Professional
Updated on Aug 30, 2011

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Respiratory System Practice Test

Directions: A good score is at least 8 correct answers out of these 10 questions.

1. Respiration actually is the process of:

(a) Sucking air into the lungs

(b) Converting glucose into ATP by tissue cells

(c) Blowing air out of the lungs

(d) Gas exchange between two or more body compartments

2. Ventilation is the process of:

(a) Gas exchange between one body compartment and another

(b) Removing acid from the intestine

(c) Blowing out stale air, and sucking in fresh air

(d) Creating new pulmonary tissue via mitosis

3. Gas exchange that occurs between the blood in the systemic capillaries and the fluid within tissue cells:

(a) Hyperventilation

(b) Acid–base balance

(c) External respiration

(d) Internal respiration

4. The actual places of gas exchange within the gills of fish:

(a) Operculum

(b) Lung surface

(c) Bone surfaces within the gill arches

(d) Thin plates on the gill filaments

5. The scientific name for the voice box:

(a) Trachea

(b) Epiglottis

(c) Larynx

(d) Pharynx

6. If the lower respiratory pathway can be compared to an inverted olive tree, then the “olives” on this tree are actually represented by the:

(a) Primary bronchi

(b) Bronchioles

(c) Alveoli

(d) Pulmonary capillaries

7. An increase in the intra-alveolar pressure above the total atmospheric pressure would most likely result in:

(a) Sucking of air into the lungs

(b) Severe hypoventilation

(c) Blowing of air out of the lungs

(d) Paralysis of the diaphragm muscle

8. The critical first event in human inspiration:

(a) Collapse of the alveoli

(b) Relaxation of the diaphragm muscle

(c) Muscular constriction of the windpipe

(d) Contraction of the diaphragm muscle

9. A person with normal lungs usually doesn’t have to make a lot of effort to inspire more air, just after making an expiration. An important reason for this fact is that:

(a) Each person usually has plenty of ATP to spare

(b) The VC is so large that a regular expiration makes no difference in it

(c) TLC = VC + RV

(d) The residual volume keeps the alveoli partially inflated at all times

10. A key linkage between CO 2 and blood acidity is the:

(a) Carrying of oxygen by hemoglobin

(b) Release of nitrogen from tissue cells during their metabolism

(c) Combination of carbon dioxide with H 2 O in thousands of erythrocytes

(d) Activation of acid-forming enzymes within blood leukocytes




1. D

2. C

3. D

4. D

5. C

6. C

7. C

8. D

9. D

10. C

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