Physiology MCQs

Page No. 36

A decrease in the arterial PO2 is seen in______________?


aDecrease in hemoglobin concentration of arterial blood


bParalysis of inspiratory muscles


cSluggish blood flow


dHigh altitudes


View Answer High altitudes

tidal volume in adult is_____________?


a125 ml


b500 ml


c1500 ml


d2200 ml


View Answer 500 ml

The volume of gas in the lungs at the end of normal expiration is____________?


aExpiratory reserve volume


bFunctional residual capacity


cResidual volume


dInspiratory reserve volume



The type of hypoxia present in high attitude is_____________?


aAnemic Hypoxia


bHypoxic Hypoxia


cStagnant Hypoxia


dHistotoxic Hypoxia


View Answer Hypoxic Hypoxia

Vital capacity is decreased, timed vital capacity (FEV 1.0 %) is normal in______________?


aBronchial asthma


bScoliosis


cChronic bronchitis


dAcute bronchitis


View Answer Scoliosis

Surfactant is secreted by_____________?


aPnemocyte I


bPnemocyte II


cGoblet cells


dPulmonary vessels


View Answer Pnemocyte II

Alveolar O2 tension is______________?


aIncreased by hyperventilation


bDecreased by hyperventilation


cSimilar to venous O2 tension


dNot affected by respiratory depression



Hypoxia is characterized by ___________?


aLow arterial PO2


bIntense chemoreceptor response


cFavorable response to 100% oxygen


dAll of the above


View Answer All of the above

The intrapleural pressure at the end of deep inspiration is ______________?


a-4 mm Hg


b+4 mm Hg


c-18 mm Hg


d+ mm Hg


View Answer -4 mm Hg

The alveolar ventilation in an individual with tidal volume: 600 ml, dead space 150 ml and respiratory rate of 15/ minute is_____________?


a2.5 lit/Min


b4.0 lit /Min


c6.75 Lit/Min


d9 Lit/Min


View Answer 6.75 Lit/Min

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