Body Fluids and Circulation MCQ Questions & Answers in Zoology

181. The smallest blood vessel in the body is

A Capillary

B Artery

C Vein

D Vena cava

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182. You are required to draw blood from a patient and to keep it in a test tube for analysis of blood corpuscles and plasma. You are also provided with the following four types of test tubes. Which of them will you not use for the purpose?

A Test tube containing calcium bicarbonate

B Chilled test tube

C Test tube containing heparin

D Test tube containing sodium oxalate

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183. Heart beat is controlled by which cranial nerve

A X^th

B IX^th

C III^rd

D V^th

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184. Cords of billroth are found in

A Liver

B Kidneys

C Spleen

D Tonsils

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185. Mineral found in red pigment of vertebrate blood is

A magnesium

B iron

C calcium

D copper

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186. In cardiac circulation,"Dup" sound is heard when

A Mittral

B Mittral valves open

C Semilunar valves

D Tricuspid valve close

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187. The rate of heart beat in a Rabbit is nearly

A 92 per minute

B 100 per minute

C 72 per minute

D 200 per minute

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188. All the components of the nodal tissue are autoexcitable. Why does the SA node act as the normal pacemaker?

A SA node has the highest rate of depolarisation

B SA node has the lowest rate of depolarisation

C SA node is the only component to generate the threshold potential

D Only SA node can convey the action potential to the other components

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189. Blood supply to heart musculature is Via

A Cardiac artery

B Coronary artery

C Aorta

D Pulmonary

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190. The blood during diastole

A Leaves the heart

B Enters the heart

C Enters lungs

D Leaves the ventricles

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181. The smallest blood vessel in the body is

182. You are required to draw blood from a patient and to keep it in a test tube for analysis of blood corpuscles and plasma. You are also provided with the following four types of test tubes. Which of them will you not use for the purpose?

183. Heart beat is controlled by which cranial nerve

184. Cords of billroth are found in

185. Mineral found in red pigment of vertebrate blood is

186. In cardiac circulation,"Dup" sound is heard when

187. The rate of heart beat in a Rabbit is nearly

188. All the components of the nodal tissue are autoexcitable. Why does the SA node act as the normal pacemaker?

189. Blood supply to heart musculature is Via

190. The blood during diastole

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