Human Respiration Quiz

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Test your understanding of breathing biology.

AYU MAISARAH

Malaysia

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Human Respiration Quiz


Human Respiration QuizVersion en ligne Test your understanding of breathing biology. par AYU MAISARAH 1 What muscle primarily drives inspiration during quiet breathing? a Diaphragm b Intercostal muscles c Pectoral muscles d Abdominal muscles 2 Where does gas exchange occur in the lungs? a Trachea b Pleura c Alveoli d Bronchi 3 Which gas diffuses from alveoli into blood? a Carbon dioxide b Oxygen c Nitrogen d Argon 4 What structure surrounds each lung to reduce friction? a Pleura b Peritoneum c Meninges d Pericardium 5 Which organ regulates breathing rate the most? a Heart b Diaphragm c Brainstem d Lungs 6 What drives most breathing under normal conditions? a Helium levels b Oxygen levels c Carbon dioxide levels d Nitrogen levels 7 What is tidal volume? a Air held after full exhale b Air moved in/out per breath at rest c Total lung capacity d Air in dead space 8 Which feature increases surface area for gas exchange? a Alveolar surface area b Bronchial smooth muscle c Tracheal rings d Laryngeal cartilage 9 What event occurs during exhalation? a Diaphragm contracts b Diaphragm relaxes c Rib cage expands d Alveoli fill with air 10 Which blood component carries most CO2 back to lungs? a Platelets b Hemoglobin c Fibrinogen d Bicarbonate in plasma