Q. No.The functions of the respiratory rhythm center can be moderated by a center located in:
1.
Medulla oblongata
2.
Pons varoli
3.
Hypothalamus
4.
Cerebrum
Damage to alveolar walls leading to decrease in respiratory surface is characteristic of:
1. Asthma
2. Pneumoconiosis
3. Emphysema
4. Pneumonitis
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 |
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 |
Approximately what amount of oxygen is carried in a dissolved state through the plasma by 100 ml of oxygenated blood?
1. 0.6 ml
2. 1.4 ml
3. 4 ml
4. 5 ml
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 |
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
The alveoli are lined with:
1. Simple cuboidal epithelium
2. Pseudo-stratified columnar ciliated epithelium
3. Transitional epithelium
4. Simple squamous epithelium
Pulmonary fibrosis is the feature of all cases of:
1. Occupational respiratory disorders
2. Emphysema
3. Pneumonia
4. Bronchial asthma
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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