Medical MCQs

Page No. 1

Cardiac cycle duration in man is_______________?


a0.4 seconds


b 0.8 seconds


c 1.2 seconds


d1.6 seconds


View Answer 0.8 seconds

Smoking causes_____________?


aCiliary motility


bCellular hyperplasia


cMucous secretion


d All of the above


View Answer All of the above

Oxygen affinity is increased by all except_________________?


aAlkalosis


b Hypoxia


cIncreased HbF


dHypothermia


View Answer Hypoxia

Increase in partial pressure of CO2 leading to release of oxygen to the tissues is________________?


aHaldane effect


b Bohr effect


c Breur effect


d Hamburger effect


View Answer Bohr effect

Carotid body function in an organ work as_______________?


a Differential 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



An important non- respiratory function of lungs is_____________?


aAnion balance


b Sodium balance


cPotassium balance


dCa+2 balance


View Answer Sodium balance

Surfactant is secreted by_____________?


aPnemocyte I


b Pnemocyte II


cGoblet cells


dPulmonary vessels


View Answer Pnemocyte II

Muscle of expiration____________?


aDiaphragm


b Internal intercostals


c External intercostals


dRcti Abdominis



In which of the following diseases would you expect to find an increase in thickness of the respiratory membrane ?


a Emphysema


bAsthma


cPulmonary artery thrombosis


dSkeletal abnormalities of the chest


View Answer Emphysema

Arterial PO2 is reduced in_____________?


aAnemia


bKCN poisoning


c Pulmonary hypoventilation


dCO poisoning



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