The value of which of the following is normally the highest in normal physiological conditions?
1. | Residual volume | 2. | Expiratory reserve volume |
3. | Functional residual capacity | 4. | Inspiratory reserve volume |
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What amount of carbon dioxide is delivered by every 100 ml of deoxygenated blood at the alveoli under normal physiological conditions?
1. 4 ml | 2. 5 ml |
3. 15 ml | 4. 20 ml |
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The oxy-hemoglobin dissociation curve shifts to the right in all the following conditions except:
1. Presence of 2,3-DPG | 2. Increased temperature |
3. Increased pH | 4. Increased carbon dioxide |
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The binding of carbon dioxide to hemoglobin:
I: is related to the partial pressure of carbon dioxide
II: is affected by the partial pressure of oxygen
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
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Under normal physiological conditions, the maximum volume of air a person can breathe out after a forced inspiration in a healthy human being is about:
1. | 2300 ml | 2. | 3500 ml |
3. | 4600 ml | 4. | 5800 ml |
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Branchial respiration is seen in all the following except:
1. Aquatic arthropods | 2. Fishes |
3. Amphibians like frog | 4. Aquatic mollusks |
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The volume of thoracic chamber in the antero-posterior axis can be increased by:
1. Contraction of diaphragm
2. Relaxation of diaphragm
3. Contraction of external intercostals
4. Contraction of internal intercostals
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The partial pressure of oxygen in oxygenated blood is about:
1. 104 mmHg | 2. 100 mmHg |
3. 95 mmHg | 4. 40 mmHg |
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Which of the following equations regarding the calculation of pulmonary capacities would be correct?
1. IC = IRV – TV | 2. EC = VC – IRV |
3. VC = ERV + IRV | 4. TLC = VC – RV |
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The formation of oxy-hemoglobin at the alveoli is favored by all the following except:
1. High pO2 | 2. Low pCO2 |
3. Lower H+ ion concentration | 4. Higher temperature |
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