Heart MCQs with Answers

In the human heart, why is the wall of the right ventricle thicker than the wall of the right atrium?

• A.The right ventricle receives blood directly from the lungs
• B.The right atrium pumps blood to the entire body
• C.The right ventricle must exert a greater force than the right atrium
• D.The right atrium is located above the right ventricle

The cell membrane of cardiac muscle cell separates different concentrations of which ions?

• A.Calcium, Chloride, Phosphate
• B.Sodium, Chloride, Magnesium
• C.Potassium, Iron, Zinc
• D.Sodium, Potassium, Calcium

Relaxation of heart muscles and allowing the chambers to fill with blood is called?

• A.Systole
• B.Diastole
• C.Cardiac arrest
• D.Palpitation

How are the four chambers of the heart arranged?

• A.All four side by side
• B.Three above one
• C.Two above two
• D.One above three

Obstruction of the circumflex artery leads to which of the following type of MI?

• A.Anterior wall MI
• B.Posterior wall MI
• C.Septal MI
• D.Inferior wall MI

Past Paper MCQ

Blood leaves the heart through arteries. The main artery leaving the left ventricle is called _?

• A.Pulmonary artery
• B.Coronary artery
• C.Aorta
• D.Vena cava

When the heart contracts, the oxygenated blood from _ is pushed with force into the aorta.

• A.Right atrium
• B.Right ventricle
• C.Left ventricle
• D.Left atrium

Blood returning to the mammalian heart in a pulmonary vein drains first into the _?

• A.Left atrium
• B.Right atrium
• C.Left ventricle
• D.Right ventricle

Which of the following event prevents backflow of blood from ventricles to atria during ventricular systole?

• A.Closure of semilunar valves
• B.Opening of semilunar valves
• C.Opening of tricuspid and bicuspid valves
• D.Closure of tricuspid and bicuspid valves

Which part of the heart collects deoxygenated blood?

• A.Sinus venosus
• B.Left atrium
• C.Right ventricle
• D.Aorta