Intermediate Lung Quiz
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This quiz contains 10 questions. Click below to begin.
Q1. Which structure prevents food from entering the trachea during swallowing?
- Glottis
- Uvula
- Epiglottis
- Pharynx
Q2. Which type of epithelial tissue lines the trachea?
- Stratified squamous epithelium
- Transitional epithelium
- Simple cuboidal epithelium
- Pseudostratified ciliated columnar epithelium
Q3. What is the role of surfactant in the alveoli?
- Traps pathogens
- Reduces surface tension
- Secretes mucus
- Enhances gas diffusion
Q4. Which cells in the alveoli produce surfactant?
- Type II pneumocytes
- Ciliated epithelial cells
- Alveolar macrophages
- Type I pneumocytes
Q5. Which lung volume represents air remaining after maximal exhalation?
- Inspiratory reserve volume
- Residual volume
- Vital capacity
- Tidal volume
Q6. What is the function of the pleural fluid?
- Filters lymph
- Traps foreign particles
- Reduces friction during breathing
- Initiates cough reflex
Q7. Which branch of the nervous system causes bronchoconstriction?
- Parasympathetic nervous system
- Sympathetic nervous system
- Enteric nervous system
- Somatic motor system
Q8. Which structure forms the root of the lung?
- Alveolar sacs
- Pleura alone
- Only bronchi
- Bronchi, vessels, nerves, lymphatics
Q9. Which artery carries deoxygenated blood to the lungs?
- Bronchial artery
- Pulmonary vein
- Pulmonary artery
- Aorta
Q10. What causes air to enter the lungs during inspiration?
- Positive pressure in lungs
- Contraction of alveoli
- Closing of glottis
- Negative intrathoracic pressure