Q. No.Which of the following will bring about inhalation?
1.
Contraction of diaphragm and contraction of external intercostals
2.
Relaxation of diaphragm and relaxation of external intercostals
3.
Contraction of diaphragm and contraction of internal intercostals
4.
Relaxation of diaphragm and relaxation of internal intercostals
The volume of thoracic chamber can be increased by:
1. Contraction of diaphragm and external intercostals
2. Contraction of diaphragm and internal intercostals
3. Relaxation of diaphragm and contraction of external intercostals
4. Relaxation of diaphragm and contraction of internal intercostals
The diagram below shows:
1. The Bohr effect
2. The chloride shift
3. The Haldane effect
4. Hering-Breuer reflex
The amount of carbon dioxide that can diffuse through the diffusion membrane is much higher compared to that of oxygen because:
| 1. | the gradient across the membrane is much higher for carbon dioxide |
| 2. | carbon dioxide is more toxic than oxygen |
| 3. | solubility of carbon dioxide is much higher than that of oxygen |
| 4. | carbon dioxide has more affinity for hemoglobin than that of oxygen |
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 |
© 2025 GoodEd Technologies Pvt. Ltd.