,BIO 205 Midterm Exam Human Body in Health and Disease II
Questions And Answers 2026/2027 Jersey College
Q1. Which structure serves as a common passageway for both air
and food?
A) Pharynx
B) Trachea
C) Bronchus
D) Larynx
Correct Answer: A) Pharynx
Rationale: The pharynx receives air from the nasal cavity and food from the
oral cavity before the pathways separate.
Q2. Which structure primarily prevents food and liquid from
entering the airway during swallowing?
A) Uvula
B) Epiglottis
C) Thyroid cartilage
D) Nasal septum
Correct Answer: B) Epiglottis
Rationale: The epiglottis helps cover the entrance to the larynx during
swallowing and directs swallowed material toward the esophagus.
Q3. What is the primary function of the respiratory mucosa and its
cilia?
A) Produce erythrocytes
B) Exchange gases directly with blood
C) Trap inhaled particles and move mucus toward the pharynx
D) Regulate blood glucose
Correct Answer: C) Trap inhaled particles and move mucus toward the
pharynx
Rationale: Mucus captures contaminants, while coordinated ciliary
movement helps transport the contaminated mucus away from the lower
respiratory tract.
Q4. Which airway carries air from the larynx toward the primary
bronchi?
, A) Pharynx
B) Alveolus
C) Pleural cavity
D) Trachea
Correct Answer: D) Trachea
Rationale: The trachea extends from the larynx and divides into the right
and left primary bronchi.
Q5. What is the primary site of gas exchange between inspired air
and pulmonary blood?
A) Alveoli
B) Bronchi
C) Larynx
D) Nasal cavity
Correct Answer: A) Alveoli
Rationale: Alveoli have extremely thin walls and are surrounded by
capillaries, providing an efficient surface for oxygen and carbon dioxide
exchange.
Q6. Which substance helps prevent collapse of alveoli by reducing
surface tension?
A) Mucus
B) Surfactant
C) Hemoglobin
D) Fibrin
Correct Answer: B) Surfactant
Rationale: Pulmonary surfactant reduces surface tension within alveoli and
helps keep them open during breathing.
Q7. Which membrane directly covers the surface of the lungs?
A) Parietal pleura
B) Peritoneum
C) Visceral pleura
D) Pericardium
Correct Answer: C) Visceral pleura
Questions And Answers 2026/2027 Jersey College
Q1. Which structure serves as a common passageway for both air
and food?
A) Pharynx
B) Trachea
C) Bronchus
D) Larynx
Correct Answer: A) Pharynx
Rationale: The pharynx receives air from the nasal cavity and food from the
oral cavity before the pathways separate.
Q2. Which structure primarily prevents food and liquid from
entering the airway during swallowing?
A) Uvula
B) Epiglottis
C) Thyroid cartilage
D) Nasal septum
Correct Answer: B) Epiglottis
Rationale: The epiglottis helps cover the entrance to the larynx during
swallowing and directs swallowed material toward the esophagus.
Q3. What is the primary function of the respiratory mucosa and its
cilia?
A) Produce erythrocytes
B) Exchange gases directly with blood
C) Trap inhaled particles and move mucus toward the pharynx
D) Regulate blood glucose
Correct Answer: C) Trap inhaled particles and move mucus toward the
pharynx
Rationale: Mucus captures contaminants, while coordinated ciliary
movement helps transport the contaminated mucus away from the lower
respiratory tract.
Q4. Which airway carries air from the larynx toward the primary
bronchi?
, A) Pharynx
B) Alveolus
C) Pleural cavity
D) Trachea
Correct Answer: D) Trachea
Rationale: The trachea extends from the larynx and divides into the right
and left primary bronchi.
Q5. What is the primary site of gas exchange between inspired air
and pulmonary blood?
A) Alveoli
B) Bronchi
C) Larynx
D) Nasal cavity
Correct Answer: A) Alveoli
Rationale: Alveoli have extremely thin walls and are surrounded by
capillaries, providing an efficient surface for oxygen and carbon dioxide
exchange.
Q6. Which substance helps prevent collapse of alveoli by reducing
surface tension?
A) Mucus
B) Surfactant
C) Hemoglobin
D) Fibrin
Correct Answer: B) Surfactant
Rationale: Pulmonary surfactant reduces surface tension within alveoli and
helps keep them open during breathing.
Q7. Which membrane directly covers the surface of the lungs?
A) Parietal pleura
B) Peritoneum
C) Visceral pleura
D) Pericardium
Correct Answer: C) Visceral pleura
