Cardiovascular System Review

What is the primary function of the heart in the cardiovascular system?

• To filter blood

• To produce blood cells

• To pump blood throughout the body

• To store blood

Which layer of the heart wall is composed of cardiac muscle tissue and is responsible for the heart's contractile activity?

• Endocardium

• Myocardium

• Epicardium

• Pericardium

What type of blood vessels carry blood away from the heart?

• Veins

• Capillaries

• Arteries

• Venules

Which of the following is NOT a function of the circulatory system?

• Transporting nutrients to body cells

• Removing waste products from the body

• Producing hormones

• Distributing heat throughout the body

The heart's pacemaker, which initiates the heartbeat, is known as:

• AV node

• SA node

• Bundle of His

• Purkinje fibers

Which chamber of the heart receives deoxygenated blood from the body?

• Left atrium

• Right atrium

• Left ventricle

• Right ventricle

What is the function of capillaries in the cardiovascular system?

• To serve as the main storage for blood

• To allow exchange of gases, nutrients, and waste between blood and tissues

• To pump blood back to the heart

• To regulate blood pressure

The aorta is:

• The largest artery in the body that carries blood from the heart to the rest of the body

• A large vein that returns blood to the heart

• A type of capillary that connects arteries and veins

• The chamber of the heart that pumps oxygenated blood to the body

Which valve prevents blood from flowing back into the left ventricle after it has entered the aorta?

• Mitral valve

• Tricuspid valve

• Aortic valve

• Pulmonary valve

The sequence of blood flow through the heart is best described as:

• Body -> Right Atrium -> Right Ventricle -> Lungs -> Left Atrium -> Left Ventricle -> Body

• Lungs -> Left Atrium -> Left Ventricle -> Body -> Right Atrium -> Right Ventricle -> Lungs

• Body -> Left Atrium -> Left Ventricle -> Lungs -> Right Atrium -> Right Ventricle -> Body

• Lungs -> Right Atrium -> Right Ventricle -> Body -> Left Atrium -> Left Ventricle -> Lungs