231. Atherosclerosis refers to the ailment of

A Lungs
B Heart
C Kidney
D Liver
Answer :   Heart
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232. Bundle of His originates from

A Sinu-auricular node
B Auriculo-ventricular node
C Pulmonary aorta
D Systemic aorta
Answer :   Auriculo-ventricular node
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233. The heart keeps on beating throught the life without fatigue because

A In contracts slowly
B It has a resting or recovery period
C It can use lactic acid as an extra source of energy
D Vertebral column
Answer :   It has a resting or recovery period
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234. A portal system is that in which

A A vein begins from an organ and ends in heart
B An artery breaks up in an organ & restarts by the union of its capillaries
C The blood from gut is brought in to kidneys before it is poured in to heart
D A vein breaks up in an organ in to capillaries & restarts by their union as a new vein in the same organ
Answer :   A vein breaks up in an organ in to capillaries & restarts by their union as a new vein in the same organ
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235. When the right ventricle contracts the blood is pump in to

A Superior vena cava
B Dorsal aorta
C Pulmonary aorta
D Pulmonary veins
Answer :   Pulmonary aorta
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236. Right atrioventricular aperture is guarded by

A Tricuspid valve
B Semilunar valvesia
C Mitral valve
D Bicuspid valve
Answer :   Tricuspid valve
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237. Normal Cardiac output is

A 15 Litres/mt
B 5 Litres x 72 /mt
C 5 Litres/mt
D 5/72 Litres/mt
Answer :   5 Litres/mt
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238. One of the following nerves inhibit the rate of heart beat

A Vagus
B Sympathetic
C Occllomotor
D Vena cava
Answer :   Vagus
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239. The remainent of formen ovale (Fossa Ovalis) is located

A Inter atrial septum
B Interventricular septum
C Between pulmonary & Aortic arches
D Superior vena Cava
Answer :   Inter atrial septum
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240. Circulation in Rabbit is

A Single & Open
B Double & Open
C Double & Close
D Single & Closed
Answer :   Double & Close
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