Physiology MCQs

Page No. 35

Carotid body function in an organ work as_______________?


aDifferential pressure of oxygen in arterial blood


bDifferential pressure of oxygen in venous blood


cDifferential pressure of oxygen in in tissue fluids


dDifferential pressure of oxygen in in hemoglobin synthesis



The approximate amount of air left in the lungs after maximal forced expiration in a normal woman______________?


a0.5 L


b2.0 L


c1.1 L


d1.8 L


View Answer 1.1 L

Inability of exchange of oxygen through lung tissue if known as____________?


aAnoxic anoxia


bAnoxia


cHistotoxic hypoxia


dIschemic hypoxia


View Answer Histotoxic hypoxia

What is true about pneumothorax ?


aTotal chest wall diameter is increased


bInterpleural pressure becomes more negative


cThe concentration of surfactant is reduced in alveoli


dIncreased lung compliance



An important non- respiratory function of lungs is_____________?


aAnion balance


bSodium balance


cPotassium balance


dCa+2 balance


View Answer Sodium balance

Carbon monoxide poisoning causes_______________?


aHypoxic hypoxia


bOxygen dissociation curve shifts to left


cCyanosis


dDiffusion capacity of lungs decreases



In cases of hypercapnia there is_______________?


aIncreased pH of blood


bDecreased pH of blood


cRemains same


dIncreased oxygen concentration in blood


View Answer Decreased pH of blood

Normal intrapleural pressure during the start of inspiration is _________ mm of Hg?


a-2


b-5


c0


d-7


View Answer -2

Energy expenditure during normal breathing____________?


a25% – 50% of total energy spent


b50% -75% of total energy spent


c15% – 20% of total energy spent


d2% – 3% of total energy spent



Kussmamul’s respiration occurs in response to_______________?


aDecrease in pH of blood


bIncrease in pH of blood


cObstructive pulmonary disease


dCarbon monoxide poisoning



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