9
MCQ (Single Correct Answer)
Incidence of emphysema a respiratory disorder is high in cigarette smokers. In such cases
A
the bronchioles are found damaged
B
the alveolar walls are found damaged
C
the plasma membrane is found damaged
D
the respiratory muscles are found damaged
10
MCQ (Single Correct Answer)
Respiratory process is regulated by certain specialised centres in the brain. One of the following listed centres can reduce the inspiratory duration upon stimulation.
A
Medullary inspiratory centre
B
Pneumotaxic centre
C
Apneustic centre
D
Chemosensitive centre
11
MCQ (Single Correct Answer)
$\mathrm{CO}_2$ dissociates from carbamino haemoglobin when
A
$p \mathrm{CO}_2$ is high and $p \mathrm{O}_2$ is low
B
$p \mathrm{O}_2$ is high and $p \mathrm{CO}_2$ is low
C
$p \mathrm{CO}_2$ and $p \mathrm{O}_2$ are equal
D
None of the above
12
MCQ (Single Correct Answer)
In breathing movements, air volume can be estimated by
A
stethoscope
B
hygrometer
C
sphygmomanometer
D
spirometer
13
MCQ (Single Correct Answer)
From the following relationships between respiratory volume and capacities, mark the correct option.
(i) Inspiratory Capacity (IC) = Tidal Volume + Residual Volume
(ii) Vital Capacity (VC) = Tidal Volume (TV) + Inspiratory Reserve Volume (IRV) + Expiratory Reserve Volume (ERV).
(iii) Residual Volume (RV) = Vital Capacity (VC) - Inspiratory Reserve Volume (IRV)
(iv) Tidal Volume (TV) = Inspiratory Capacity (IC) - Inspiratory Reserve Volume (IRV)
A
(i) Incorrect, (ii) Incorrect, (iii) Incorrect, (iv) Correct
B
(i) Incorrect, (ii) Correct, (iii) Incorrect, (iv) Correct
C
(i) Correct, (ii) Correct, (iii) Incorrect, (iv) Correct
D
(i) Correct, (ii) Incorrect, (iii) Correct, (iv) Incorrect