Tag: respiratory system in humans

Questions Related to respiratory system in humans

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?

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

  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

Which one is the first to receive lymphatic duct from lungs

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

  1. Right lymphatic duct

  2. Thoracic lymphatic duct

  3. Left subclavian vein

  4. Right subclavian vein.

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Correct Option: B

Lungs do not collapse between breaths and some air always remains in the lungs which can never be expelled because ____________________.

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

  1. There is a negative pressure in the lungs

  2. There is a negative intrapleural pressure pulling at the lung walls

  3. There is a positive intrapleural pressure

  4. Pressure in the lungs in higher than the atmospheric pressure

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Correct Option: A