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81.

Sphygnomanometer means an instrument that measures:

A.	Heart rate	B.	Blood pressure
C.	Pulse rate	D.	All of these

82.

Heart beat is under the control of:

A.	Vagus nerve	B.	Glossopharyngeal nerve
C.	Autonomic system	D.	None of these

83.

During diastole the:

A.	Blood enters the heart	B.	Blood leaves the heart
C.	Blood leaves the ventricle	D.	Blood enters the lungs

84.

Heart beat is conducted by a nodal tissue made up of specialized muscles called:

A.	Myonemes	B.	Purkinjie fibres
C.	Telodendrites	D.	Collagen fibres

85.

Physiology of blood circulation was first described by:

A.	William Harvy	B.	Carl Landsteiner
C.	Carl Correns	D.	None of these

86.

Role of pace-maker is:

A.	To increase heart beat	B.	To decrease the heart beat
C.	To initiate the heart beat	D.	To control the blood supply to heart

87.

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

88.

Electrocardiogram is:

A.	Recording of electrical activity in the heart	B.	Recording of passage of nerve impulses in the heart
C.	Recording of cardiac outputs in the heart	D.	None of these

89.

P-wave in electrocardiogram is produced by:

A.	Activation of SA-Node	B.	Contraction of ventricles
C.	Discharge of impulse from AN-Node	D.	Beginning of ventricular relaxation

90.

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