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WorksheetsRespiratory System Quiz
Total questions: 20
Worksheet time: 10mins
Which type of hypoxia occurs in cyanide poisoning?
Hypoxic hypoxia
Anaemic hypoxia
Histotoxic hypoxia
Stagnant hypoxia
Which pressure is always negative during normal breathing?
Intrapulmonary pressure
Atmospheric pressure
Transpulmonary pressure
Intrapleural pressure
Lung compliance is defined as:
Change in pressure per unit volume
Change in volume per unit pressure
Product of pressure and volume
Volume of air inspired in one breath
Which structure controls the basic rhythm of respiration?
Pneumotaxic centre
Apneustic centre
Dorsal respiratory group
Ventral respiratory group
Which of the following reduces lung compliance?
Surfactant
Emphysema
Ageing
Pulmonary fibrosis
Which of the following is a non-respiratory function of the lungs?
Gas exchange
Regulation of blood pressure
Synthesis of surfactant
Filtering air
What is the normal value of intrapleural pressure at the end of expiration?
+2 cm H2O
0 cm H2O
-2.5 cm H2O
-6 cm H2O
The transpulmonary pressure is defined as:
Intrapulmonary - intrapleural pressure
Intrapleural - intrapulmonary pressure
Alveolar - atmospheric pressure
Intrapulmonary - atmospheric pressure
Which law relates partial pressure to the total pressure of a gas mixture?
Boyle’s law
Henry’s law
Dalton’s law
Charles’ law
Which cells secrete surfactant?
Type I pneumocytes
Type II pneumocytes
Clara cells
Alveolar macrophages
Which type of hypoxia is seen in anemia?
Stagnant hypoxia
Hypoxic hypoxia
Histotoxic hypoxia
Anaemic hypoxia
Which organ receives 100% of cardiac output?
Brain
Lungs
Heart
Liver
Bohr effect facilitates oxygen release due to:
Increase in pH
Decrease in temperature
Increase in CO₂
Decrease in 2,3-BPG
In which phase of respiration is intrapulmonary pressure lowest?
Inspiration
Expiration
End of inspiration
End of expiration
What is the major stimulus for respiration?
O₂ level in blood
H⁺ ion concentration
CO₂ level in blood
Temperature
What is the effect of surfactant on surface tension?
Increases surface tension
Decreases surface tension
No effect on surface tension
Increases lung recoil
Which type of hypoxia is seen in heart failure?
Histotoxic hypoxia
Hypoxic hypoxia
Anaemic hypoxia
Stagnant hypoxia
Non-respiratory function of lung includes all except:
Filtering microthrombi
Synthesis of ACE
Reservoir for blood
Production of erythropoietin
Which pressure prevents lung collapse?
Atmospheric pressure
Transpulmonary pressure
Intrapulmonary pressure
Partial pressure of CO₂
Lung compliance is decreased in:
Emphysema
Ageing
Pulmonary edema
Asthma
