41. Role of spleen in mammals is

A To control Blood pressure
B To assist liver
C To assist kidneys
D To act as haemopoitic tissue in embryo
Answer :   To act as haemopoitic tissue in embryo
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42. During high blood pressure, regulations of heart beat and circulation are controlled by

A Vasodilator and vasoconstrictor centres
B Cardio-stimulatory and vasoconstrictor centres
C Cardio-inhibitory and vasoconstrictor centres
D Cardio-inhibitory and vasodilator centers
Answer :   Cardio-stimulatory and vasoconstrictor centres
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43. Blood pressujre and heart beat is regulated by

A Insulin
B Adrenalin
C Optic nerve
D PH
Answer :   Adrenalin
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44. The blood vascular system of rabbit is

A Open type
B Closed type
C Semi closed type
D Semi open type
Answer :   Closed type
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45. Blood vessel which brings oxygenated blood to left auricle is

A Precaval vein
B Post caval vein
C Pulmonary vein
D Pulmonary artery
Answer :   Pulmonary vein
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46. The genotype of $$B$$-group father of an $$O$$-group child is

A $${I^O}{I^O}$$
B $${I^B}{I^B}$$
C $${I^A}{I^B}$$
D $${I^O}{I^B}$$
Answer :   $${I^O}{I^B}$$
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47. After the death of Rabbit

A Movement of eye balls
B Movement of eye libs
C Closing & opeing thevalves of heart
D Movement of pinnae
Answer :   Movement of pinnae
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48. Which one of the following animals has two separate circulatory pathways?

A Lizard
B Whale
C Shark
D Frog
Answer :   Whale
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49. Heart of pigeon (Birds) is

A 3 - chambered
B 3 1/2- chambered
C 4 - chambered
D Ventricle and aorta
Answer :   4 - chambered
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50. Thebesian valve guards

A Coronary sins
B Bases of pulmonary veins
C Opening between right auricle & right ventricle
D Opening between left auricle and left ventricle
Answer :   Coronary sins
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