Q. No.Both carbon dioxide and oxygen move across the respiratory membrane due to:
1. gravity
2. blood pressure
3. diffusion
4. active transport
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With respect to the atmospheric air, the deoxygenated blood flowing into lung capillaries has a higher concentration of:
| 1. oxygen | 2. both carbon dioxide and oxygen |
| 3. carbon monoxide | 4. carbon dioxide |
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Why would hemoglobin deliver oxygen to the tissues?
1. oxygen concentration of tissue fluid is lower
2. carbon dioxide concentration of tissue fluid is lower
3. carbon dioxide concentration of tissue fluid is higher
4. the oxygen concentration of blood is lower
Hemoglobin carrying carbon dioxide is called as:
| 1. Deoxyhemoglobin | 2. Carbaminohemoglobin |
| 3. Carboxyhemoglobin | 4. Oxyhemoglobin |
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What is the state that describes the hemoglobinic acid?
| 1. | oxidized | 2. | hydrated |
| 3. | reduced | 4. | hyper |
A disease of the lungs, due to chronic inhalation of dust particles, would be characterized by:
| 1. | pneumonia | 2. | tuberculosis |
| 3. | pulmonary fibrosis | 4. | lung cancer |
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An abnormal collection of air in the pleural space between the lung and the chest wall is called as:
1. intrapleural pressure
2. respiratory distress syndrome
3. pneumothorax
4. decompression sickness
A pulmonary disorder reduces the forced expiratory volume in first second but does not significantly affect the vital capacity. This disorder will be most accurately described as:
1. restrictive lung disorder
2. pulmonary fibrosis
3. pneumoconiosis
4. obstructive lung disorder
What will be the partial pressure of oxygen in a mixture of gases where the total pressure is 500 mmHg and oxygen comprises 20% of the gas mixture?
| 1. 0.1 mm Hg | 2. 10 mm Hg |
| 3. 100 mm Hg | 4. 200 mm Hg |
All the following changes occur in the circulatory system when a fetus is delivered and begins to breathe on its own for the first time except:
1. the rate of blood flow through pulmonary circulation decreases
2. the foramen ovale closes
3. the ductus arteriosus closes
4. the resistance to blood flow through the lung decreases
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