Cardiovascular System Quiz

What is the main function of the heart?

• A. Generating blood pressure

• B. Regulating blood supply

• C. Routing blood

• D. Ensuring one way blood flow

Which artery originates on the left side of the aorta and supplies much of the anterior wall of the heart?

• A. Anterior interventricular artery

• C. Left marginal artery

• D. Right coronary artery

• B. Circumflex artery

What is the function of the AV valves in the heart?

• A. Allow backflow of blood from ventricles to atria

• B. Prevent blood flow from atria to ventricles

• D. Allow blood flow from ventricles to atria

• C. Prevent backflow into the ventricles from the pulmonary trunk and aorta

Which layer of the heart wall is composed of cardiac muscle cells and is responsible for contraction of the heart?

• A. Epicardium

• B. Myocardium

• D. Pericardium

• C. Endocardium

What is the purpose of the pericardial fluid in the pericardium?

• D. Regulating blood pressure

• A. Anchoring the heart within the mediastinum

• B. Preventing friction as the heart moves within the pericardial cavity

• C. Supplying blood to the heart wall

Which chamber of the heart pumps blood into the aorta?

• C. Right ventricle

• B. Left atria

• D. Left ventricle

• A. Right atria

What is the function of the semilunar valves in the heart?

• C. Prevent backflow of blood from ventricles to atria

• B. Prevent blood flow from atria to ventricles

• D. Allow blood flow from ventricles to atria

• A. Allow backflow into the ventricles from the pulmonary trunk and aorta

Which vein carries blood from the lungs to the left atrium?

• D. Pulmonary vein

• B. Inferior vena cava

• A. Superior vena cava

• C. Pulmonary artery

Where is the base of the heart located?

• A. Deep to the sternum and extends to the 2nd intercostal space

• D. Near the apex of the heart

• B. Deep to the left 5th intercostal space near the midclavicular line

• C. To the right of the midline in the thoracic cavity

What is the purpose of the papillary muscles in the heart?

• C. Generating blood pressure

• B. Anchoring the heart within the mediastinum

• A. Preventing valves from opening into the atria

• D. Routing blood