Pulse is defined as:
A.An alternate expansion and recoil of an artery
B.Ventricular systole during which bllod is passed into ventricles of heart
C.Clossure of semilunar valves at the entrance of aortae
D.None of these
Category: Circulatory System Physiology Mcqs
How many times does the heat of man beats per minute
A.52 times
B.62 times
C.72 times
D.82 times
Bundle of His in mammalian heart extends through:
A.Wall of right auricle via auriculo-ventricular aperture
B.Wall of left auricle via left auriculo-ventricular aperture
C.Interventricular septum
D.None of these
The relaxation of heart during heart beat is called:
A.Systole
B.Diastole
C.Diastasis
D.None of these
The impulse from SA-Node to AV-Node is conducted by means of:
A.Wall of right auricle itself
B.A bundle of specialized fibres
C.Bundle of His
D.None of these
Percentage of blood contained in pulmonary circulation in man is:
A.16%
B.20%
C.25%
D.12%
The rate of conduction through bundle of His is:
A.Fast
B.Very fast
C.Slow
D.Very slow
Parasympathetic nerve fibres decrease the rate of heartbeat by releasing which of these at their free endings:
A.Acetylcholine
B.Adrenaline
C.Noradrenaline
D.None of these
A person having bradycardia is likely to have which of the following:
A.Increase in concentation of blood oxygen level
B.Low temperature of his body
C.Both (a) & (b)
D.None of these
Sympathetic nerve fibres increase the rate of heartbeat by releasing which of these at their free endings:
A.Adrenaline
B.Noradrenaline
C.Acetylcholine
D.None of these
