21.  Blood is flowing in pulmonary vein is

A. Oxygenated

B. Deoxygenated

C. Mixed

D. None of above

Answer : Option A

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22.  Diastole of ventricles is

A. 0.30 sec

B. 0.40 sec

C. 0.70 sec

D. 0.10 sec

Answer : Option B

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23.  The wave representing of ventricles diastole is

A. P

B. Q

C. R

D. T

Answer : Option D

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24.  Heart is known as double pump (circulation) because of

A. the right chamber push blood into lungs

B. left chambers push blood into the entire body

C. Heart receives impure blood from the body

D. both (a) and (b)

Answer : Option D

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25.  Effect of Nicotine on blood circulation

A. it mixes with blood

B. it contracts the arterial wall

C. it decrease the blood pressure

D. it decrease the carrying of oxygen to lungs

Answer : Option C

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26.  It decreasing the carrying of oxygen of Haemoglobin

A. Oxygen

B. Carbon dioxide

C. Carbon monoxide

D. Nitrogen

Answer : Option C

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27.  Number of leucocytes is 1 cubic mm

A. 5000 - 8000

B. 2000 - 3000

C. 8000 - 13000

D. 1 - 5 million

Answer : Option A

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28.  It shows pulmonary circulation

A. Left atrium (Oxygenated blood) - Lungs (deoxygenated blood ) - Right atrium

B. Left atrium (deoxygenated blood ) - Lungs (oxygenated blood ) - Right atrium

C. Left atrium (Oxygenated blood )- Lungs (deoxygenated blood )- Left atrium

D. Right atrium (deoxygenated blood) - Lungs (oxygenated blood) - Left atrium

Answer : Option D

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29.  Systolic pressure of heart

A. 80 mm Hg

B. 120 mm Hg

C. 40 mm Hg

D. 320 mm Hg

Answer : Option C

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30.  SA - Node is located at

A. Left upper corner of the left atrium

B. Left lower corner of the left atrium

C. Right upper corner of the right atrium

D. Right lower corner of the right atrium

Answer : Option C

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