Respiratory System Quiz

What causes respiratory acidosis?

• Hyperventilation

• Hypoventilation

• Kidney failure

• Vomiting

How does hypoventilation lead to acidosis?

• Decreases carbon dioxide levels, increasing pH

• Increases carbon dioxide levels, decreasing pH

• Increases oxygen levels, decreasing pH

• Decreases oxygen levels, increasing pH

What causes respiratory alkalosis?

• Hypoventilation

• Hyperventilation

• Kidney failure

• Diarrhea

How does hyperventilation lead to alkalosis?

• Increases carbon dioxide levels, decreasing pH

• Decreases carbon dioxide levels, increasing pH

• Decreases oxygen levels, decreasing pH

• Increases oxygen levels, increasing pH

What is the role of carbonic anhydrase in the respiratory system?

• Transport oxygen

• Bind carbon dioxide to hemoglobin

• Convert carbon dioxide to bicarbonate ions and vice versa

• Regulate breathing rate

What is the chemical equation for the reaction catalyzed by carbonic anhydrase?

• CO₂ + H₂O → H₂CO₃

• H₂CO₃ → CO₂ + H₂O

• CO₂ + H₂O ↔ H⁺ + HCO₃⁻

• H⁺ + HCO₃⁻ → CO₂ + H₂O

What is the normal pH range of blood?

• 7.00–7.25

• 7.25–7.35

• 7.35–7.45

• 7.45–7.65

Which two organ systems play a key role in regulating blood pH?

• Digestive and endocrine

• Cardiovascular and nervous

• Respiratory and renal

• Immune and lymphatic

What is the main function of the respiratory system?

• Produce red blood cells

• Filter waste products from the blood

• Exchange oxygen and carbon dioxide

• Regulate body temperature

What structures are involved in gas exchange in the lungs?

• Bronchi

• Trachea

• Alveoli

• Larynx