CARDIOVASCULAR SYSTEM MCQ – Exercise 34

The multiple choice questions in this online test paper focuses on CARDIOVASCULAR SYSTEM MCQ. If you are looking for self evaluation of your PG Medical entrance exam preparation then this online CARDIOVASCULAR SYSTEM MCQ Test Paper will help you to evaluate your exam preparation.

Instruction for REPRODUCTIVE BIOLOGY/ REPRODUCTIVE MEDICINE / INFERTILITY MCQs:

1- This online MCQ practice test paper contains 30 questions.
2- Each question in this online practice test paper have four options and only 1 option is correct.
3- You can view the answers of this practice test paper after submitting the practice test paper.
Note: The answers mentioned at the end of practice test are the best suitable option as per our knowledge. Users shall cross-check the answers with their textbooks.

Q 1. during activation of the myocyte Ca2+ becomes attached to

Troponin C

Troponin I

Troponin T

all of the above

Q 2. which of the following is a phenyalkaylamine class of calcium channel blocker

amlodepine

nifedipine

verapamil

dilitiazem

Q 3. atrial contribution to ventricular filling is reduced by

AV dissociation

prolongation or abbreviation of P-R interval

all of the above

Q 4. in starling law of heart the force of ventricular contraction is a function of

end diastolic length of cardiac muscle

end systolic length of cardiac muscle

mid diastolic length of cardiac muscle

mid systolic length of cardiac muscle

Q 5. cardiac function variable that is influenced by ventricular loading conditions is

cardiac output

ejection fraction

ventricular volumes

all of the above

Q 6. which of the following is a T- type calcium channel blocker

mibefradil

isradipine

nicardipine

nisoldipine

Q 7. which of the following parameter is included in Lapalce law

intracavitory ventricular pressure

ventricular radius

wall thickness

all of the above

Q 8. calcium channel antagonists block which voltage gated calcium channel

K type

L type

M type

N type

Q 9. normal value of ventricular end diastolic volume

50±20 mL/m2

60±20 mL/m2

70±20 mL/m2

80±20 mL/m2

Q 10. L type calcium channels are found abundantly in all of the following tissue except

calcium myocytes

vascular smooth muscles

pancreatic beta cells

brain

Q 11. vasoconstrictor effects of vasopressin occur at plasma vasopressin concentrations in the range of

1 to 7 pg per milliliter

10 to 200 pg per milliliter

200 to 400 pg per milliliter

600 to 800 pg per milliliter

Q 12. amlodepine binds which subunit of voltage gated L type calcium channels

α1a

α1b

α 1c

α1d

Q 13. which of these loop diuretics is associated with deafness

furosemide

bumetanide

ethacrynic acid

torsemide

Q 14. during exercise which of the following parameters show relatively little changes

LV end diastolic pressure

cardiac output

aortic flow velocity

rate of ventricular pressure development

Q 15. which of the following is not a loop diuretic

metolazone

piretanide

bumetanide

torsemide

Q 16. acceleration of cardiac relaxation occurs by phosphorylation by cyclic AMP of which protein

Troponin C

Troponin I

Troponin T

all of the above

Q 17. stretching capability of which myofibrilar protein contributes to the elasticity of heart

titin

myosin

actin

all of the above

Q 18. the extracellular concentration of calcium is how many times more than the intracellular concentration

2000 times

5000 times

10,000 times

20,000 times

Q 19. the sarcomere length associated with the most forceful contraction is approximately

1.5 µm

2.2 µm

2.7 µm

3.2 µm

Q 20. which of the following is a dihydropyridine class of calcium channel blocker

amlodepine

nifedipine

nimodipine

all of the above

Q 21. drugs that enhances relaxation of myocardium are called

dromotropic

ionotropic

lusitropic

cathotropic

Q 22. Laplace law indicates

length of myocardial fiber

tension of myocardial fiber

diameter of myocardial fiber

all of the above

Q 23. plasma concentrations of all of the following substances are markedly increased in septic shock

atrial natriuretic peptide

calcitonin gene related peptide

adenosine

vasopressin

Q 24. diastolic heart failure is differentiated from systolic heart failure by

ejection fraction

relative wall thickness

end diastolic volume

all of the above

Q 25. ejection fraction is the

ratio of stroke volume to end systolic volume

ratio of stroke volume to end diastolic volume

ratio of end systolic volume to stroke volume

ratio of end diastolic volume to stroke volume

Q 26. ventricular remodeling is a result of

loss of myocytes

maladaptive changes in surviving myocytes

maladaptive changes in extracellular matrix

all of the above

Q 27. afterload is determined by

arterial pressure

LV volume

thickness of LV wall

all of the above

Q 28. which of the following is a benzothiazepine class of calcium channel blocker

amlodepine

nifedipine

nimodipine

dilitiazem

Q 29. which of the following is true for carvedilol

non selective beta blocker

anti oxidant

α mediated vasodilator

all of the above

Q 30. which protein series mediates the activation of adenylate cyclase by β adrenergic agonists

CARDIOVASCULAR SYSTEM MCQ – Exercise 34

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