ANATOMY and PHYSIOLOGY MCQ Set-53
Anatomy and Physiology MCQ Question 446:-
Which valve prevents backward flow of blood into the left Atrium?
(a) Aortic valve
(b) Pulmonary valve
(c) tricuspid valve
(d) Mitral valve
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Ans: (d) Mitral valve ✔
Anatomy and Physiology MCQ Question 447:-
The last product in the process of blood coagulation is
(a) Thromboplastin
(b) Prothrombin
(c) Fibrin
(d) thrombin
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Ans: (c) Fibrin ✔
Anatomy and Physiology MCQ Question 448:-
The blood circulation that is responsible for gas exchange between alveoli and capillaries resulting in the oxygenation of blood is the
(a) coronary circulation
(b) hepatic circulation
(c) pulmonary circulation
(d) systemic circulation
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Ans: (c) pulmonary circulation ✔
Anatomy and Physiology MCQ Question 449:-
Blood supply to the heart is given by…..
(a) pulmonary
(b) coronary
(c) Aorta
(d) myocardial
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Ans: (b) coronary ✔
Anatomy and Physiology MCQ Question 450:-
Cardiac output can be calculated using………
(a) CO=Tidal volume×heart rate
(b) CO=Tidal volume×Peripheral vascular resistance
(c) CO=Peripheral vascular resistance×heart rate
(d) CO=Stroke volume×heart rate
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Ans: (d) CO=Stroke volume×heart rate ✔
Anatomy and Physiology MCQ Question 451:-
Mitral valve is also known as….
(a) bicuspid valve
(b) tricuspid valve
(c) tetracuspid valve
(d) Monocuspid valve
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Ans: (a) bicuspid valve ✔
Anatomy and Physiology MCQ Question 452:-
The heart valve are lined by… layer of the heart
(a) Epicardium
(b) myocardium
(c) endocardium
(d) pericardium
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Ans: (c) endocardium ✔
Anatomy and Physiology MCQ Question 453:-
Which of the statements is true regarding heart contraction?
(a) the intercalated disc are the Atria with ventricles to contract together simultaneously
(b)The sudden influx of potassium into myocyst Triggers Depolarization
(c) the pressure and volume changes in heart stimulation heart contraction
(d) ventricular systole occurs following depolarization of the ventricles
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Ans: (d) ventricular systole occurs following depolarization of the ventricles ✔
Anatomy and Physiology MCQ Question 454:-
Slowest conduction is in
(a) SA node
(b) purkinje fibres
(c) AV node
(d) bundle of his
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Ans: (c) AV node ✔
Anatomy and Physiology MCQ Question 455:-
What is the effect of an extremely Rapid pulse rate of 200/ minute on blood pressure?
(a) The blood pressure remains unchanged
(b) blood pressure will fall.
(c) the blood pressure will be raised
(d) the blood pressure will fluctuate constantly
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Ans: (b) blood pressure will fall. ✔
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