Q. No.Select the correct events that occur during inspiration.
(a) Contraction of diaphragm
(b) Contraction of external inter-costal muscles
(c) Pulmonary volume decreases
(d) Intra pulmonary pressure increases
1. (c) and (d)
2. (a), (b) and (d)
3. only (d)
4. (a) and (b)
Identify the wrong statement with reference to transport of oxygen:
| 1. | Partial pressure of CO2 can interfere with O2 binding with haemoglobin. |
| 2. | Higher H+ concentration in alveoli favours the formation of oxyhaemoglobin. |
| 3. | Low pCO2 in alveoli favours the formation of oxyhaemoglobin. |
| 4. | Binding of oxygen with haemoglobin is mainly related to partial pressure of O2. |
Which of the following is not a symptom of asthma?
1. Difficulty in breathing
2. Breathing noisily/wheezing
3. Alveolar walls are damaged
4. Inflammation of bronchi and bronchioles
Carbonic anhydrase plays an important role in the transport of carbon dioxide in
1. Leucocytes
2. Thrombocytes
3. Erythrocytes
4. Platelets
In which of the following disorders there is difficulty in breathing causing wheezing due to inflammation of bronchi and bronchioles?
1. Emphysema
2. Asthma
3. Pleurisy
4. Tuberculosis
Which of the following is a chronic respiratory disorder in which alveolar walls are damaged due to which respiratory surface is decreased? One of the major causes of this disease is cigarette smoking
1. Asthma
2. Emphysema
3. Silicosis
4. Pneumonia
The Total Lung Capacity (TLC) is the total volume of air accommodated in the lungs at the end of forced inspiration.
This includes:
| 1. | RV; IC (Inspiratory Capacity); EC (Expiratory Capacity); and ERV |
| 2. | RV; ERV; IC and EC |
| 3. | RV; ERV; VC (Vital Capacity) and FRC (Functional Residual Capacity) |
| 4. | RV (Residual Volume); ERV (Expiratory Reserve Volume); TV (Tidal Volume); and IRV (Inspiratory Reserve Volume) |
Match the following columns and select the correct option:
| Column I | Column II | ||
| (a) | Pneumotaxic Centre | (i) | Alveoli |
| (b) | O2 Dissociation curve | (ii) | Pons region of the brain |
| (c) | Carbonic Anhydrase | (iii) | Haemoglobin |
| (d) | Primary site of exchange of gases | (iv) | R.B.C. |
| Options: | (a) | (b) | (c) | (d) |
| 1. | (i) | (iii) | (ii) | (iv) |
| 2. | (ii) | (iii) | (iv) | (i) |
| 3. | (iii) | (ii) | (iv) | (i) |
| 4. | (iv) | (i) | (iii) | (ii) |
The maximum volume of air a person can breathe in after a forced expiration is known as:
1. Expiratory Capacity
2. Vital Capacity
3. Inspiratory Capacity
4. Total Lung Capacity
Select the correct statement:
| 1. | Expiration occurs due to external intercostal muscles. |
| 2. | Intrapulmonary pressure is lower than atmospheric pressure during inspiration. |
| 3. | Inspiration occurs when atmospheric pressure is less than intrapulmonary pressure. |
| 4. | Expiration is initiated due to the contraction of the diaphragm. |
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