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You are in Home >> Exams >> Primary FRCA >> Primary MCQ 1

Physiology MCQ Bank 4

Created: 14/2/2006

16. The following may be found in normal adult venous blood:

a) 3% carboxyhaemoglobin
b) 5% methaemoglobin
c) 70% oxyhaemoglobin
d) 2% free haemoglobin
e) 2% fetal haemoglobin

17. In normal human lungs:

a) a low PO2 produces pulmonary vasodilatation
b) beta-2 agonists cause bronchoconstriction
c) pulmonary vascular resistance is increased by serotonin
d) pulmonary vascular resistance is decreased by histamine
e) pulmonary vascular resistance is decreased by noradrenaline

18. The normal response to surgery includes:

a) a decrease in urine volume
b) a decrease in the urinary excretion of sodium
c) a decrease in plasma cortisol level
d) an increase in the urinary excretion of nitrogen
e) an increase in the urinary excretion of potassium

19. Capillary permeability is increased by:

a) bradykinin
b) adrenaline
c) calcium
d) vasopressin
c) histamine

20. Expected changes in a patient with a phaeochromocytoma include:

a) a decreased haematocrit
b) a decreased total blood volume
c) a decreased serum sodium concentration
d) an abnormal glucose tolerance test
e) a reduced metabolic rate



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