Quiz on Heart Anatomy

What is the function of the endocardium in the heart?

• It is the outermost layer that protects the heart.

• It lines the heart's chambers, covers the valves, and continues into the vessels.

• It is made of cardiac muscle and performs the work of the heart.

• It is a double-walled sac that surrounds the heart.

Which layer of the heart wall is the thickest and why?

• The endocardium, because it covers the heart's surface.

• The myocardium, because it is made of cardiac muscle and performs the work of the heart.

• The epicardium, because it is a thin layer of squamous epithelium.

• The pericardium, because it is a double-walled sac that surrounds the heart.

What is the pericardium?

• The innermost layer of the heart that lines the chambers.

• The middle layer of the heart made of cardiac muscle.

• A thin layer of squamous epithelium that covers the heart's surface.

• A double-walled sac that surrounds the heart.

What is the epicardium composed of?

• Cardiac muscle.

• A double-walled sac.

• Squamous epithelium.

• Endothelial tissue.

How many chambers does the heart have?

• 2

• 4

• 6

• 8

What are the upper chambers of the heart called?

• Ventricles

• Atria

• Valves

• Vessels

What are the lower chambers of the heart called?

• Ventricles

• Atria

• Valves

• Vessels

Which of the following is NOT one of the great vessels of the heart?

• Superior vena cava

• Inferior vena cava

• Pulmonary artery

• Hepatic artery

What is the function of the ventricles?

• They receive blood.

• They send blood out of the heart.

• They oxygenate the blood.

• They store blood.

What is the function of valves in the heart?

• To pump blood to the lungs

• To ensure that blood flows in a forward direction

• To carry oxygen to the body

• To filter the blood