Heart Anatomy and Physiology

What is structure D

• SA node

• AV node

• Purkinje fibers

• Bundle of His

What valve prevents the back flow of blood from the left atrium?

• Pulmonary semilunar valve

• Aortic semilunar valve

• Tricuspid valve

• Bicuspid valve

#12

• Tricuspid valve

• Bicuspid vavle

• Pulmonary semilunar valve

• Aortic semilunar valve

• Left pulmonary vein

The pulmonary circuit pumps blood to the

• Lungs

• Body

What chamber of the heart pumps oxygenated blood to the body?

• Right atrium

• Right ventricle

• Left atrium

• Left ventricle

What structures returns blood from the lower half of the body to the heart?

• Superior vena cava

• Inferior vena cava

• Aorta

• Pulmonary artery

Blood entering the pulmonary artery is

• Oxygenated

• Deoxygenated

Systole is

• Ventricle contraction

• Ventricle relaxation

• Atrial contraction

• Atrial relaxation

What returns the deoxygenated blood to the right atrium from the heart muscle?

• Coronary arteries

• Coronary sinus

• Aorta

• Superior vena cava

What is the primary function of the heart?

• To store nutrients

• To produce hormones

• To filter blood

• To pump blood