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1) Which structure serves as the main passage for air to enter the respiratory system? a) Esophagus b) Trachea c) Larynx d) Pharynx 2) The lungs are divided into lobes. How many lobes does the right lung have? a) 2 b) 3 c) 4 d) 5 3) Where does gas exchange primarily occur in the lungs? a) Bronchi b) Trachea c) Alveoli d) Larynx 4) What muscle plays a crucial role in the process of inhalation? a) Pectoralis major b) Intercostal muscles c) Diaphragm d) Abdominal muscles 5) How is oxygen primarily transported in the blood? a) Dissolved in plasma b) Attached to red blood cells c) In white blood cells d) Through platelets 6) The pleura in the respiratory system is: a) A muscle that aids in breathing b) A membrane that covers the lungs c) A type of respiratory cell d) A section of the trachea 7) The larynx is important for: a) Filtering air b) Voice production c) Blood oxygenation d) Mucus production 8) Spirometry is a diagnostic test that primarily evaluates: a) The capacity of the lungs to hold air b) The strength of the heart's contractions c) The efficiency of gas exchange in the alveoli d) The rate of blood flow in pulmonary arteries 9) The trachea divides into two branches known as: a) Alveoli b) Bronchi c) Bronchioles d) Larynx 10) During inhalation, the diaphragm: a) Relaxes and moves upwards b) Contracts and pulls downward c) Stays in a neutral position d) Expands and fills with air 11) Mucus in the respiratory tract functions to: a) Exchange gases b) Produce sound c) Trap and remove inhaled particles d) Regulate blood pressure 12) The primary role of the nasal cavity in respiration is to: a) Produce vocal sounds b) Filter, warm, and humidify incoming air c) Direct air into the esophagus d) Absorb nutrients from inhaled substances

Respiratory System

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