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211.

Incomplete double circulation is seen in

  • Fish

  • Amphibians

  • Birds

  • Mammals

  • Mammals


212.

Muscles of the heart are

  • striated and voluntary

  • non-striated and voluntary

  • striated, unbranched and involuntary

  • non-striated and involuntary

  • non-striated and involuntary


213.

Choose the wrong statement regarding human blood and circulatory system

  • Persons with blood group AB can receive blood from any person with any blood group

  • Calcium ions play an important role in blood clotting

  • Angina is acute chest pain when enough oxygen does not reach the brain

  • In a myogenic heart the normal activities are regulated intrinsically

  • In a myogenic heart the normal activities are regulated intrinsically


214.

In a cardiac cycle, if the stoke volume is 70 ml and heart rate is 72 beats/minute, then cardiac output is

  • 142 ml/minute

  • 72 ml/minute

  • 1070 ml/minute

  • 70 ml/minute

  • 70 ml/minute


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215.

The granulocytes which secretes histamine, serotonin and heparin are

  • Neutrophilss

  • Basophils

  • Eosinophils

  • Lymphocytes

  • Lymphocytes


216.

Match the Column-I with Column-II

Column I Column II
A. P-wave (i) Depolarisation of ventricles
B. QRS complex (ii) Repolarisation of ventricles
C. T-wave (iii) Coronary ischemia
D. Reduction in the size of T-wave

(iv) Depolarisation of atria

(v) Repolarisation of atria

Select the correct option.

  • A - (iv); B - (i); C - (ii); D - (v)

  • A - (ii); B - (i); C - (v); D - (iii)

  • A - (ii); B - (iii); C - (v); D - (iv)

  • A - (iv); B - (i); C - (ii); D - (iii)


217.

What would be the heart rate of a person if the cardiac output is 5 L, blood volume in the ventricles at the end of diastole is 100 mL and at the end of ventricular systole is 50 mL?

  • 75 beats per minute

  • 100 beats per minute

  • 125 beats per minute

  • 50 beats per minute


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