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

Physiology MCQ Bank 12

Created: 15/7/2004
1. Stimulation of the parasympathetic nervous system:

a) increases the heart rate
b) decreases the rate of gastric emptying
c) dilates the pupil
d) causes vasoconstriction
e) causes contraction of the detrusor muscle in the bladder

2. Pregnancy at term is associated with a:

a) 20% decrease in red cell mass
b) rise in cardiac output
c) fall in PaCO2
d) fall in haematocrit
e) low protein-bound iodine

3. The P5O is:

a) the oxygen saturation when the arterial partial pressure of oxygen is 50 mmHg
b) the arterial oxygen tension when haemoglobin is 50% saturated
c) an indicator of the position of the oxygen dissociation curve 
d) raised in foetal blood 
e) lowered in chronic anaemia

4. In a healthy adult human heart the:

a) left ventricular end-systolic volume is approximately 30 ml 
b) first heart sound coincides with the onset of ventricular systole
c) stroke volume is approximately 70 ml
d) left ventricular end-diastolic pressure is about 50 mmHg
e) second heart sound is caused by closure of the aortic and pulmonary valves

5. Renin:

a) is released from granules in the juxtaglomerular cells of the afferent arteriole
b) levels in the blood increase in response to a fall in plasma sodium concentration
c) levels in the blood decrease when renal perfusion is decreased
d) release is enhanced by angiotensin II
e) release is inhibited by antidiuretic hormone




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