Tag: gas exchange in humans

Questions Related to gas exchange in humans

According to Boyle's law, the product of pressure and volume is constant, hence.

zoology gas exchange and smoking gas exchange gas exchange in humans respiratory system in humans

  1. If volume of lung is increased, the pressure decreases proportionately

  2. If volume of lung is increased, the pressure also increases proportionately

  3. If volume of lungs is increased, the pressure decreases disproportionately

  4. If volume of lungs is increased, the pressure remains the same

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Correct Option: A

Which one has the smallest diameter?

zoology gas exchange and smoking gas exchange gas exchange in humans respiratory system in humans

  1. Right bronchus

  2. Left bronchus

  3. Secondary bronchiole

  4. Respiratory bronchiole

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Correct Option: D

Wind pipr arises from.

zoology gas exchange in humans gas exchange and smoking gas exchange respiratory system in humans

  1. Larynx

  2. Nasopharynx

  3. Oropharynx

  4. Laryngopharynx

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Correct Option: A

Alveoli occur in.

zoology gas exchange and smoking gas exchange gas exchange in humans respiratory system in humans

  1. Lungs

  2. Liver

  3. Kidney

  4. Brain

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Correct Option: A

Surfactant is?

zoology gas exchange and smoking gas exchange gas exchange in humans respiratory system in humans

  1. Protein produced by type II alveolar cells

  2. Excessive in many premature infants causing difficulty in breathing

  3. Decreases surface tension of fluid lining alveoli

  4. Lacking in individuals suffering from acute respiratory distress syndromes

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Correct Option: C

Which structure of lungs is directly involved in $O _2/ CO _2$ exchange between air and blood capillaries?

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  1. Bronchi

  2. Trachea

  3. Alveoli

  4. Secondary bronchi

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Correct Option: C

Inner surface of bronchi, bronchioles and fallopian tubes is lined by.

zoology gas exchange and smoking gas exchange gas exchange in humans respiratory system in humans

  1. Columnar epithelium

  2. Squamous epithelium

  3. Cubical epithelium

  4. Ciliated epithelium

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Correct Option: D

Lung alveoli are characterised by.

zoology gas exchange and smoking gas exchange gas exchange in humans respiratory system in humans

  1. Squamous epithelium

  2. Absence of cilia

  3. Surfactant secreting cubical cells

  4. All the above

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Correct Option: A

Bronchial respiration occurs with the help of.

zoology gas exchange and smoking gas exchange gas exchange in humans respiratory system in humans

  1. Book lungs

  2. Gills

  3. Trachea

  4. Pulmonary sac

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Correct Option: A

Partial pressures of oxygen and carbon dioxide in healthy human lung alveoli are respectively about.

zoology gas exchange and smoking gas exchange gas exchange in humans respiratory system in humans

  1. $104$ and $40$mm Hg

  2. $90$ and $20$mm Hg

  3. $40$ and $45$mm Hg

  4. $159$ and $0.3$mm Hg

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Correct Option: A