WGU D313 Anatomy and Physiology 2
Respiratory System Practice Test V2 (Latest
Update) Questions & Answers
| Grade A | 100% Correct
WGU D313 - Anatomy and Physiology II: Respiratory System Practice Test
1. What is the primary function of the alveoli?
A. To warm the inhaled air
B. To produce sound
C. To facilitate gas exchange
D. To trap foreign particles
2. Which structure is part of the upper respiratory system?
A. Trachea
B. Bronchi
C. Larynx
D. Pharynx
3. The process of moving air into and out of the lungs is known as:
A. Pulmonary ventilation
B. External respiration
C. Internal respiration
D. Cellular respiration
4. What is the role of the epiglottis?
A. To vibrate and produce sound
B. To regulate airflow into the bronchi
C. To prevent food from entering the trachea
D. To filter dust from inhaled air
5. Which muscle is the primary driver of quiet inspiration?
A. Internal intercostals
B. Abdominal muscles
C. Diaphragm
D. External intercostals
,6. Surfactant in the alveoli functions to:
A. Fight infection
B. Increase surface tension
C. Decrease surface tension
D. Facilitate oxygen diffusion
7. The majority of carbon dioxide is transported in the blood as:
A. Dissolved CO2 in plasma
B. Carbaminohemoglobin
C. Bicarbonate ions
D. Bound to oxygen
8. The central chemoreceptors in the medulla oblongata are primarily stimulated by:
A. Low oxygen levels in the blood
B. High oxygen levels in the blood
C. Hydrogen ions in the cerebrospinal fluid
D. Hydrogen ions directly in the blood
9. Which law states that the pressure of a gas is inversely proportional to its volume?
A. Henry's Law
B. Dalton's Law
C. Boyle's Law
D. Charles' Law
10. What is the term for the volume of air inhaled or exhaled during normal, quiet breathing?
A. Tidal Volume
B. Inspiratory Reserve Volume
C. Expiratory Reserve Volume
D. Residual Volume
11. The condition characterized by a decrease in the surface area for gas exchange due to
alveolar destruction is:
A. Asthma
B. Emphysema
C. Tuberculosis
D. Bronchitis
12. Which part of the brain contains the primary centers that control the rate and depth of
breathing?
A. Cerebrum
, B. Cerebellum
C. Pons
D. Medulla oblongata
13. The vocal cords are located within the:
A. Pharynx
B. Larynx
C. Trachea
D. Nasal cavity
14. Internal respiration refers to:
A. The exchange of gases between the lungs and the blood
B. The exchange of gases between the blood and the body tissues
C. The mechanical process of breathing
D. The use of oxygen by mitochondria
15. The partial pressure of oxygen is highest in which of the following areas?
A. Systemic veins
B. Pulmonary arteries
C. Alveolar air
D. Tissues
16. What is the function of the cilia in the respiratory tract?
A. To secrete mucus
B. To propel debris-laden mucus upward toward the pharynx
C. To humidify the air
D. To detect odors
17. The total lung capacity is the sum of the vital capacity and the:
A. Tidal volume
B. Expiratory reserve volume
C. Residual volume
D. Inspiratory reserve volume
18. Which of the following would stimulate the respiratory center to increase ventilation?
A. An increase in blood pH (alkalosis)
B. A decrease in blood carbon dioxide levels
C. A decrease in blood oxygen levels
D. A decrease in blood hydrogen ion concentration
Respiratory System Practice Test V2 (Latest
Update) Questions & Answers
| Grade A | 100% Correct
WGU D313 - Anatomy and Physiology II: Respiratory System Practice Test
1. What is the primary function of the alveoli?
A. To warm the inhaled air
B. To produce sound
C. To facilitate gas exchange
D. To trap foreign particles
2. Which structure is part of the upper respiratory system?
A. Trachea
B. Bronchi
C. Larynx
D. Pharynx
3. The process of moving air into and out of the lungs is known as:
A. Pulmonary ventilation
B. External respiration
C. Internal respiration
D. Cellular respiration
4. What is the role of the epiglottis?
A. To vibrate and produce sound
B. To regulate airflow into the bronchi
C. To prevent food from entering the trachea
D. To filter dust from inhaled air
5. Which muscle is the primary driver of quiet inspiration?
A. Internal intercostals
B. Abdominal muscles
C. Diaphragm
D. External intercostals
,6. Surfactant in the alveoli functions to:
A. Fight infection
B. Increase surface tension
C. Decrease surface tension
D. Facilitate oxygen diffusion
7. The majority of carbon dioxide is transported in the blood as:
A. Dissolved CO2 in plasma
B. Carbaminohemoglobin
C. Bicarbonate ions
D. Bound to oxygen
8. The central chemoreceptors in the medulla oblongata are primarily stimulated by:
A. Low oxygen levels in the blood
B. High oxygen levels in the blood
C. Hydrogen ions in the cerebrospinal fluid
D. Hydrogen ions directly in the blood
9. Which law states that the pressure of a gas is inversely proportional to its volume?
A. Henry's Law
B. Dalton's Law
C. Boyle's Law
D. Charles' Law
10. What is the term for the volume of air inhaled or exhaled during normal, quiet breathing?
A. Tidal Volume
B. Inspiratory Reserve Volume
C. Expiratory Reserve Volume
D. Residual Volume
11. The condition characterized by a decrease in the surface area for gas exchange due to
alveolar destruction is:
A. Asthma
B. Emphysema
C. Tuberculosis
D. Bronchitis
12. Which part of the brain contains the primary centers that control the rate and depth of
breathing?
A. Cerebrum
, B. Cerebellum
C. Pons
D. Medulla oblongata
13. The vocal cords are located within the:
A. Pharynx
B. Larynx
C. Trachea
D. Nasal cavity
14. Internal respiration refers to:
A. The exchange of gases between the lungs and the blood
B. The exchange of gases between the blood and the body tissues
C. The mechanical process of breathing
D. The use of oxygen by mitochondria
15. The partial pressure of oxygen is highest in which of the following areas?
A. Systemic veins
B. Pulmonary arteries
C. Alveolar air
D. Tissues
16. What is the function of the cilia in the respiratory tract?
A. To secrete mucus
B. To propel debris-laden mucus upward toward the pharynx
C. To humidify the air
D. To detect odors
17. The total lung capacity is the sum of the vital capacity and the:
A. Tidal volume
B. Expiratory reserve volume
C. Residual volume
D. Inspiratory reserve volume
18. Which of the following would stimulate the respiratory center to increase ventilation?
A. An increase in blood pH (alkalosis)
B. A decrease in blood carbon dioxide levels
C. A decrease in blood oxygen levels
D. A decrease in blood hydrogen ion concentration
