ANATOMY and PHYSIOLOGY MCQ Set-33
Anatomy and Physiology MCQ Question 246:-
Stroke volume is defined as-
(a) Pressure exerted by blood on the walls of vessels
(b) Amount of blood ejected by each contraction of the ventricles
(c) Amount of blood ejected by each contraction of the atrium
(d) Total amount of blood ejected by heart during a beat
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Ans: (b) Amount of blood ejected by each contraction of the ventricles ✔
Anatomy and Physiology MCQ Question 247:-
The formula of cardiac output is-
(a) CO stroke volume/heart rate
(b) CO stroke volume – heart rate
(c) CO stroke volume heart rate
(d) CO stroke volume + heart rate
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Ans: (c) CO stroke volume heart rate ✔
Anatomy and Physiology MCQ Question 248:-
Amount of cardiac output in a healthy adult is approximately-
(a) 4 L/min
(b) 5 Lit/min
(c) 6 Lit/min
(d) 10 Lit/min
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Ans: (b) 5 Lit/min ✔
Anatomy and Physiology MCQ Question 249:-
In a person if tachycardia occurs then cardiac output will be-
(a) Decreases
(b) Increases
(c) Remains unchanged
(d) First decreases then increases
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Ans: (b) Increases ✔
Anatomy and Physiology MCQ Question 250:-
Smallest arteries are known as-
(a) Arterioles
(b) Venules
(c) Capillaries
(d) Collateral arteries
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Ans: (a) Arterioles ✔
Anatomy and Physiology MCQ Question 251:-
Smallest veins are known as-
(a) Venules
(b) Capillaries
(c) Vena – cava
(d) Arterioles
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Ans: (a) Venules ✔
Anatomy and Physiology MCQ Question 252:-
Diameter of blood capillaries are about-
(a) 15 µm
(b) 7 µm
(c) 1 µm
(d) 1 A°m
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Ans: (b) 7 µm ✔
Anatomy and Physiology MCQ Question 253:-
Increase sympathetic stimulation to a blood vessels may cause-
(a) Vasodilation
(b) Vasoconstriction
(c) Bradycardia
(d) All of the above
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Ans: (b) Vasoconstriction ✔
Anatomy and Physiology MCQ Question 254:-
In following which condition will not create vasodilatation-
(a) Exercise
(b) Decreased releasing of nitric oxide
(c) Tissue hypoxia
(d) Tissue damage
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Ans: (b) Decreased releasing of nitric oxide ✔
Anatomy and Physiology MCQ Question 255:-
In following which organ is supplied by ‘circle of willis’-
(a) Kidney
(b) Brain
(c) Liver
(d) Uterus
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Ans: (b) Brain ✔
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