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 91. In a standard ECG which one of the

following alphabets is the correct

representation of the respective activity of the human heart ?

A. P:depolarization of the atria

B. R:repolarization of ventricles

C. S:start of systole

D. T:end of diastole

Answer: A

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92. If the vagus branch of frog is stimulate the

heart will show

A. Stoppage of heartbeat

B. Decreased heartbeat

C. Increased heartbeat

D. No change

Answer: B

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93. During diastole

A. Blood enter lungs

B. Blood leaves the ventricle

C. Blood leaves the heart

D. Blood enter the heart

Answer: D

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94. During the systole of ventricle

A. Blood enters the heart

B. Blood leaves the heart

C. Blood leaves the ventricle

D. Blood enters lungs

Answer: C

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95. Which of following is not a major organ of

lymphatic system?

A. Spleen

B. Kidney

C. Thoracic duct

D. Jugular vein

Answer: B

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96. Lymph vessels are united to form

A. Lymph heaet

B. Cisterna chyli

C. Thoracic duct

D. Jugular vein

Answer: C

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97. Cardiac output is determined by

A. Heat rate

B. Stroke volume

C. Blood flow

D. Both(2)and(3)

Answer: D

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98. During high blood pressure, regulatinos of

heart beat and circulation are controlled by

A. Vasodilator and vasconstrictor centers

B. Cardio-stimulatory and vasoconstrictor

centers

C. Cardio-Inhibitory and vasoconstrictor

centers

D. Cardio-inhibitory and vasodilator centers

Answer: D

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99. Blood pressure is measured by

A. Sphygmomanometer

B. Phonocardiogram

C. Electrocardiogram

D. Stethoscope

Answer: A

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100. All veins have deoxygenated blood except

A. Renal vein

B. Hepatic vein

C. Hepatic portal vein

D. Pulmonary veins

Answer: D

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