Sphygnomanometer means an instrument that measures:
A.Heart rate
B.Blood pressure
C.Pulse rate
D.All of these
Category: Circulatory System Physiology Mcqs
Why do we have techycardia during fever?
A.Because the increase in temperature increase the heart rate
B.Because parasympathetic system releases more sympathin
C.Because more acetylcholine is liberated at the free nerve endings of sympathetic nerve fibres
D.Because of some reason other than these
The heart rate in man is increased by:
A.Sympathetic nerve fibres by releasing sympathin at free verve endings
B.By parasympathetic nerve fibres by releasing acetylcholine at their free nerve endings
C.Both of these nerve fibres
D.None of these fibres
Which one is the percentage of blood contained in the heart in man is:
A.7%
B.9%
C.10%
D.12%
Brain receives which of these percentages of cardiac output:
A.5%
B.10%
C.15%
D.25%
Free nerve endings of sympathetic nervous system will release which of these substances during the condition of tachycardia in our body:
A.Acetylcholine
B.Adrenaline
C.Noradrenaline
D.None of these
Ichaemia of myocardium in a person may often lead to:
A.Mycardial infraction
B.Tachycardia
C.Bradycardia
D.None of these
P-wave in the electrocardiogram is produced by:
A.Beginning of ventricular relaxation
B.Beginning of ventricular contraction
C.Activation of SA-Node
D.None of these
How much percentage of cardiac output is received by the digestive organs in the body:
A.15%
B.25%
C.35%
D.45%
Time taken to complete a cardiac cycle in man is:
A.0.73 second
B.0.83 seconds
C.0.94 seconds
D.None of these
