B:-All the above i, ii, iii and iv
C:-Only i, ii and iv
Correct Answer:- Option-B

Question60:-Which of the following statement is/are true about pulmonary 'C' fiber
receptor ?

i. Impulses from these receptors pass up the vagus nerve in slowly conducting non
myelinated fibers.

ii. Stimulation results in rapid shallow breathing and even apnea.

iii. Stimulation causes bronchodilation and decreases mucus secretion in airway.

iv. Engorgement of pulmonary capillaries and increase in interstitial fluid volume of
alveolar walls activate these receptors.

A:-Only i, ii and iii

B:-Only i, ii and iv
D:-Only i and ii

Correct Answer:- Option-B

Question61:-Which of the following statement is/are false about Forced Expiratory
Volume ?

i. FEv, is the volume of air that can be forcibly expired in first second.

ii. The entire vital capacity can be forcibly expired in 3 seconds normally.

iii. IN normal individuals 90% of vital capacity can be forcibly expired is first second.
iv. In fibrosis both FEv: and FVC decrease but FE: is decreased less than FVC.

A:-Only iv

B:-Only iii and iv

C:-Only iii

D:-Only i and iv

Correct Answer:- Option-C

Question62:-Asphyxia is characterized by
i. Acute hypoxia and hypercapnea develop together.
ii. There is profound stimulation of respiration.
iii. Catecholamine secretion increases and blood pH drops.
iv. In 10% of drowning death results from asphyxia without water entry into lungs.
A:-Only i and ii
B:-All the above (i, ii, iii and iv)
C:-Only i, ii and iv
D:-Only i and iii
Correct Answer:- Option-B
Question63:-Which of the following statement is/are true about respiratory changes
during exercise ?

i. Arterial eco, increases during most forms of exercise.
ii. Arterial po. usually increases slightly although it may fall at very high work out