Heart Anatomy and Function Quiz

Which part of the heart is known as the pacemaker?

• AV node

• SA node

• Bundle of His

• Purkinje fibers

Which structure conducts electrical impulses from the AV node to the ventricles?

• SA node

• Purkinje fibers

• Bundle of His

• Atrial systole

Which valve prevents backflow of blood into the right ventricle?

• Aortic Valve

• Pulmonic Valve

• Mitral Valve

• Tricuspid Valve

What is the characteristic of the apex of the heart?

• Upper, flattened

• Lower, pointed

• Rounded and smooth

• Sharp and narrow

What is the function of the pericardium?

• Lines the interior heart

• Encloses the heart

• Thickest muscle layer

• Thin outer layer

What is the role of the endocardium?

• Encloses the heart

• Lines the interior heart

• Thickest muscle layer

• Thin outer layer

What is the fibrous pericardium's role?

• Lines the interior heart

• Encloses the heart

• Provides a protective layer

• Acts as a thin outer layer

What color is used to represent the left heart in the diagram?

• Blue

• Red

• Green

• Yellow

What is the function of the pulmonary trunk?

• Carries blood from the right ventricle to the lungs

• Carries blood from the left ventricle to the body

• Carries blood from the right atrium to the right ventricle

• Carries blood from the left atrium to the left ventricle

Which structure is labeled as the left ventricle?

• Pumps blood into the aorta

• Pumps blood into the pulmonary trunk

• Receives blood from the right atrium

• Receives blood from the left atrium