Blood pressure is the force which:
A.Heart exerts on blood going out of it
B.Blood pushes against the walls of blood vessels
C.Blood vessels exert on the blood
D.None of these but something else
Category: Circulatory System Physiology Mcqs
Heart shows rhythmic contractions and expansions withour pause and fatigue which may be defined as
A.Circulation in the heart
B.Heart beat
C.Both (a) & (b)
D.None of these
A person having hypoxia, high temperature and increased CO2 level in his blood would likely have:
A.Bradyeardia
B.Tachycardia
C.Both (a) & (b)
D.None of these
Other organs of the body receive:
A.20% of the cardiac output
B.30% of the cardiac output
C.40% of the cardiac output
D.35% of the cardiac output
Sympathetic stimulation of heart is done during:
A.Stress
B.Anger
C.Excitement
D.All of these
During Ischaemia of myocardium the blood supply to muscles of heart in coronary artery is:
A.Reduced
B.Increased
C.Often increased and often decreased
D.Not affected
Principle pacemaker in mammalian heart is:
A.SA-Node
B.AV-Node
C.Perkinjie fibre
D.None of these
Which of these is correct percentage respectively of blood received by the heart muscles, brain, digestive organs, kidneys and other organs:
A.10%, 15% 25%, 20% and 30%
B.15%, 15% 25%, 20% and 25%
C.10%, 20% 25%, 30% and 15%
D.10%, 15% 20%, 30% and 15%
Neural control of heart beat is done by which of the following nerves:
A.Parasympathetic fibres from vagus nerve
B.Sympathetic fibres occurring in some spinal nerves
C.Both of these fibres
D.None of these
Parasympathetic stimulation of heart is done at:
A.Rest
B.Sleeping
C.Both (a) & (b)
D.None of these
