Which of these substances will be produced by our body in order to bring state of bradycardia:
A.Acetylchoiline
B.Adrenaline
C.Both (a) & (b)
D.None of these
A.Acetylchoiline
B.Adrenaline
C.Both (a) & (b)
D.None of these
A.SA-Node
B.AV-Node
C.Purkinjie fibres
D.Carotid labyrinth
A.Right auricle only
B.Right auricle and partially in left also
C.Right and left both
D.Left auricle and partially in right also
A.1 mm per second
B.3 mm per second
C.5mm per second
D.None of these
A.Decreasing the rate of initiation of heart beat in SA-Node
B.Decreasing the excitability of fibres of internodal pathway
C.Both (a) & (b)
D.None of these
A.Sphygnomanometer
B.Electrocardiograph
C.Stethescope
D.None of these
A.Wall of right auricle near the opening of right anterior vena cava
B.Wall of left ventricle close to the opening of pulmonary veins
C.Wall of right auricle near the interauricular septum
D.Wall of right ventricle near the auriculo-ventricular valve
A.Cylindrical bundle made up of slender fibres
B.Flattened and made up of band-like fibres
C.Rounded with thick fibres
D.None of these
A.Heart rate
B.Blood pressure
C.Pulse rate
D.All of these
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