Blood Flow Through the Heart

What kind of blood enters the right atrium?

• Oxygen-rich blood

• Blood low in carbon dioxide

• Deoxygenated blood

• Oxygenated blood

Through which vessels does deoxygenated blood enter the right atrium?

• Pulmonary veins

• Coronary arteries

• Venae cavae and coronary sinus

• Aorta and its branches

Where does blood go after it leaves the right atrium?

• Into the left atrium

• Into the left ventricle

• Into the pulmonary trunk

• Into the right ventricle

Blood flows into the lungs through which vessels?

• Pulmonary veins

• Pulmonary arteries

• Coronary arteries

• Aorta and its branches

After picking up oxygen in the lungs, where does blood return to?

• Right ventricle

• Left ventricle

• Right atrium

• Left atrium

How does blood enter the left ventricle from the left atrium?

• Through the tricuspid valve

• Through the pulmonary valve

• Through the aortic valve

• Through the mitral valve

What valve prevents backflow into the left atrium?

• Aortic valve

• Mitral valve

• Tricuspid valve

• Pulmonary valve

Which vessel carries oxygenated blood to the body?

• Vena cava

• Pulmonary artery

• Aorta

• Coronary sinus

What type of blood is returned to the heart from the tissues?

• Oxygen-poor blood

• Oxygen-rich blood

• Only deoxygenated blood

• Blood high in oxygen

Which side of the heart pumps blood to the lungs?

• Left side

• Right side

• Both sides

• Bottom half