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
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
A.7%
B.9%
C.10%
D.12%
A.5%
B.10%
C.15%
D.25%
A.Acetylcholine
B.Adrenaline
C.Noradrenaline
D.None of these
A.Mycardial infraction
B.Tachycardia
C.Bradycardia
D.None of these
A.Beginning of ventricular relaxation
B.Beginning of ventricular contraction
C.Activation of SA-Node
D.None of these
A.15%
B.25%
C.35%
D.45%
A.0.73 second
B.0.83 seconds
C.0.94 seconds
D.None of these
A.Increase in body temperature
B.Increase in CO2 level of blood
C.Both (a) & (b)
D.None of these
