Biology - Mock Test 63

Question 621

What is true about vein?

A) All veins carry deoxygenated blood B) All veins carry oxygenated blood C) They carry blood from organs towards heart D) They carry blood from heart towards organs

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Question 622

Wall of blood capillary is formed of?

A) Haemocytes B) Parietal cells C) Endothelial cells D) Oxyntic cells

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Question 623

Valves occur in?

A) arteries, veins and auricles B) Atria, ventricles and veins C) Arteries, veins and ventricles D) SA node, AV node and veins

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Question 624

Valves which allow blood from ventricles into arteries and not in opposite direction are?

A) Aortic valve and mitral valve B) AV valves and semilunar valves C) Bicuspid and tricuspid valves D) Semilunar valves and tricuspid

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Question 625

Valve surrounding opening of coronary sinus is?

A) Thebesius valve B) Eustachian valve C) Mitral valve D) Semilunar valve

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Question 626

Valve present over left auriculo-ventricular opening is?

A) Semilunar valve B) Tricuspid valve C) Valve of Thebesius D) Bicuspid valve

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Question 627

Value of cardiac output is?

A) Auricular volume × ventricular volume B) Stroke volume × Rate of heart beat C) Blood pumped in one minute D) Both B and C

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Question 628

Typical ‘lubb-dup’ sounds heard in heart beat are due to?

A) Closing of bicuspid and tricuspid valves B) closing of semilunar valves C) Blood under pressure through aorta D) Closure of bicuspid-tricuspid valves followed by semilunar valves

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Question 629

Trombocytes have a life of?

A) 3-4 weeks B) 4-5 weeks C) 3-4 days D) None of the above

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Question 630

Tricuspid valve is present between?

A) left atrium and left ventricle B) right and left atria C) right and left ventricles D) right atrium and right ventricle

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