BIOS 252 Week 6 Quiz Exam 3 (Latest
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. The primary function of the respiratory system is:
A. Transport nutrients
B. Exchange gases
C. Circulate blood
D. Produce hormones
Correct Answer: B
Rationale: The respiratory system brings oxygen into the body and
removes carbon dioxide.
2. The conducting zone includes:
A. Nose, pharynx, larynx, trachea, bronchi
B. Alveoli only
C. Capillaries only
D. Lungs only
Correct Answer: A
Rationale: Conducting airways filter, warm, and humidify air
before it reaches the alveoli.
,3. The respiratory zone includes:
A. Alveoli and alveolar ducts
B. Nose and pharynx
C. Trachea only
D. Bronchi only
Correct Answer: A
Rationale: Gas exchange occurs at the alveoli.
4. The diaphragm is innervated by:
A. Phrenic nerve
B. Vagus nerve
C. Sciatic nerve
D. Accessory nerve
Correct Answer: A
Rationale: The phrenic nerve controls contraction and relaxation of
the diaphragm.
5. Inhalation occurs when:
A. Diaphragm contracts and thoracic cavity volume increases
B. Diaphragm relaxes
C. Air is expelled
D. Lungs collapse
Correct Answer: A
Rationale: Air moves from high to low pressure into the lungs.
,6. Exhalation is primarily:
A. Passive at rest
B. Active at rest
C. Controlled by heart
D. Controlled by liver
Correct Answer: A
Rationale: Elastic recoil of lungs and thoracic cavity expels air.
7. The pleura:
A. Reduces friction between lungs and thoracic wall
B. Produces RBCs
C. Conducts electricity
D. Clots blood
Correct Answer: A
Rationale: Double-layered membrane surrounding lungs with
lubricating fluid.
8. Tidal volume is:
A. Air inhaled or exhaled during normal breathing
B. Maximum inhalation
C. Maximum exhalation
D. Residual volume
Correct Answer: A
Rationale: Represents the normal resting breath volume.
, 9. Inspiratory reserve volume is:
A. Additional air inhaled after tidal inspiration
B. Normal breath
C. Air remaining after exhalation
D. Total lung capacity
Correct Answer: A
Rationale: Increases lung ventilation during deep breathing.
10. Expiratory reserve volume is:
A. Additional air exhaled after tidal exhalation
B. Normal breath
C. Residual volume
D. Maximum inhalation
Correct Answer: A
Rationale: Helps increase air expelled during forced exhalation.
11. Residual volume is:
A. Air remaining in lungs after maximal exhalation
B. Tidal air
C. Dead space
D. Inspiratory air
Correct Answer: A
Rationale: Prevents lung collapse and maintains alveolar inflation.
12. Vital capacity is:
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. The primary function of the respiratory system is:
A. Transport nutrients
B. Exchange gases
C. Circulate blood
D. Produce hormones
Correct Answer: B
Rationale: The respiratory system brings oxygen into the body and
removes carbon dioxide.
2. The conducting zone includes:
A. Nose, pharynx, larynx, trachea, bronchi
B. Alveoli only
C. Capillaries only
D. Lungs only
Correct Answer: A
Rationale: Conducting airways filter, warm, and humidify air
before it reaches the alveoli.
,3. The respiratory zone includes:
A. Alveoli and alveolar ducts
B. Nose and pharynx
C. Trachea only
D. Bronchi only
Correct Answer: A
Rationale: Gas exchange occurs at the alveoli.
4. The diaphragm is innervated by:
A. Phrenic nerve
B. Vagus nerve
C. Sciatic nerve
D. Accessory nerve
Correct Answer: A
Rationale: The phrenic nerve controls contraction and relaxation of
the diaphragm.
5. Inhalation occurs when:
A. Diaphragm contracts and thoracic cavity volume increases
B. Diaphragm relaxes
C. Air is expelled
D. Lungs collapse
Correct Answer: A
Rationale: Air moves from high to low pressure into the lungs.
,6. Exhalation is primarily:
A. Passive at rest
B. Active at rest
C. Controlled by heart
D. Controlled by liver
Correct Answer: A
Rationale: Elastic recoil of lungs and thoracic cavity expels air.
7. The pleura:
A. Reduces friction between lungs and thoracic wall
B. Produces RBCs
C. Conducts electricity
D. Clots blood
Correct Answer: A
Rationale: Double-layered membrane surrounding lungs with
lubricating fluid.
8. Tidal volume is:
A. Air inhaled or exhaled during normal breathing
B. Maximum inhalation
C. Maximum exhalation
D. Residual volume
Correct Answer: A
Rationale: Represents the normal resting breath volume.
, 9. Inspiratory reserve volume is:
A. Additional air inhaled after tidal inspiration
B. Normal breath
C. Air remaining after exhalation
D. Total lung capacity
Correct Answer: A
Rationale: Increases lung ventilation during deep breathing.
10. Expiratory reserve volume is:
A. Additional air exhaled after tidal exhalation
B. Normal breath
C. Residual volume
D. Maximum inhalation
Correct Answer: A
Rationale: Helps increase air expelled during forced exhalation.
11. Residual volume is:
A. Air remaining in lungs after maximal exhalation
B. Tidal air
C. Dead space
D. Inspiratory air
Correct Answer: A
Rationale: Prevents lung collapse and maintains alveolar inflation.
12. Vital capacity is:
