SPS113: REVISION 7.2

The innermost layer of the heart is

• epicardium.

• pericardium.

• myocardium.

• endocardium.

The myocardium is made of

• pericardium.

• smooth muscle.

• cardiac muscle.

• skeletal muscle.

The pacemaker of the heart is the

• SA node.

• AV node.

• Bundle of His.

• Purkinje fibers.

Which of following is the thickest layer of heart structure?

• Left atrium.

• Right atrium.

• Left ventricle.

• Right ventricle.

Which of the following is false statement about bicuspid valve.

• It is a semilunar valve.

• It is also called mitral valve.

• It is located at left site of the heart.

• It prevents blood from enter the left atrium.

Which of the following structure is NOT part of cardiac conducting system?

• AV node.

• SA node.

• AV valve

• Bundle of His

The valve that opens up when deoxygenated blood is pumped to the lungs is the

• bicuspid valve.

• tricuspid valve.

• aortic semilunar valve.

• pulmonary semilunar valve.

The supply of blood to the heart's walls travels through

• aorta.

• vena cava.

• coronary artery.

• pulmonary artery.

The correct order of stimulus generation in the cardiac intrinsic conduction system is

• AV node, SA node, Purkinje fibers, AV bundle.

• SA node, AV node, AV bundle, Purkinje fibers.

• Purkinje fibers, AV bundle, AV node, SA node.

• AV bundle, Purkinje fibers, SA node, AV node.

The exchange of gases, nutrients and hormones happens in the

• arteries.

• venules.

• arterioles.

• capillaries.