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

Choose the incorrect statement

1. Every 100 ml of deoxygenated blood delivers approximately 4 ml of CO₂ to the alveoli

2. Carbonic anhydrase is present in very high concentration in RBC

3. High pCO₂ and low pO₂ in tissues help in binding of carbon dioxide

4. CO₂ is carried in haemoglobin as carboxyhaemoglobin 

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

Match the lung volumes given in column I with their respective values in column II.

 Column-I                                       Column-II

a. Tidal volume                           (i) 1000 mL

b. Residual volume                     (ii) 2500-3500 mL

c. Inspiratory reserve volume      (iii) 1200 mL

d. Expiratory reserve volume       (iv) 500 mL

1. a(i), b(ii), c(iii), d(iv)

2. a(i), b(iv), c(ii), d(iii)

3. a(ii), b(iii), c(i), d(iv)

4. a(iv), b(iii), c(ii), d(i)

Excessive cigarette smoking leading to damage of alveolar walls is associated with

1. Asthma

2. Emphysema

3. Silicosis

4. Botulism

Match the items given in Column I with those in Column II and select the correct option given below.

Column-I                            Column-II

a. Inspiratory capacity         (i) IRV + EC

b. Vital capacity                 (ii) TV + IRV

c. Residual volume            (iii) TLC –VC

d. Functional residual       (iv) TLC – IC
    capacity

(1) a(i), b(ii), c(iv), d(iii)

(2) a(iii), b(i), c(ii), d(iv)

(3) a(i), b(iii), c(ii), d(iv)

(4) a(ii), b(i), c(iii), d(iv)

Factors which can cause right shift in oxyhaemoglobin curve include all except

1. Increase in pCO₂

2. Decrease in pO₂

3. Increase in pH

4. Increase in H⁺ concentration

Inspiration can occur if $\underline{}$ $$ $$ $$ $$ $$ $$ $$ $$ $A$ $$ $$ $$ $$ $$ $$ pressure is less than atmospheric pressure, i.e., there is $\underline{}$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $B$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ $$ pressure in the lungs with respect to atmosphere pressure. Choose the option that fills the blanks correctly.
           A                                 B

1. Intra-pulmonary              Positive

2. Intra-pulmonary              Negative

3. Inter-pleural                   Positive

4. Intra-pleural                   Positive

Choose the correct sequence during expiration

(i) Pressure increases in pulmonary cavity

(ii) Volume of thoracic cavity decreases

(iii) Expulsion of air from high pressure to low pressure

(iv) Decrease in volume of pulmonary cavity

1. i $\to$ ii $\to$ iii $\to$ iv

2. iv $\to$ i $\to$ iii $\to$ ii

3. ii $\to$ iv $\to$ i $\to$ iii

4. iii $\to$ iv $\to$ i $\to$ ii