Human Cardiovascular System

The right atrium receives oxygen-poor blood from which of the following?

• Pulmonary veins

• Aorta

• Superior vena cava

• Pulmonary arteries

Which valve is located between the right atrium and right ventricle?

• Mitral valve

• Tricuspid valve

• Aortic valve

• Pulmonary valve

Which type of blood vessel carries oxygen-rich blood from your heart to your body’s tissues?

• Veins

• Arteries

• Capillaries

• None of the above.

The heart’s conduction system is compared to what?

• Electrical wiring of a building

• Plumbing system of a house

• Nervous system of the body

• None of the above.

Which node sends the signals that make your heart beat?

• Atrioventricular (AV) node

• Sinoatrial (SA) node

• Right bundle branch

• None of the above.

The signals in the heart’s conduction system start at the ________.

• bottom of the heart

• top of the heart

• middle of the heart

• none of the above

Which part of the heart carries electrical signals from the AV node to the lower chambers?

• Left bundle branch

• Right bundle branch

• Bundle of His

• Purkinje fibers

Which condition is characterized by a heartbeat that’s too fast, too slow, or irregular?

• Cardiomyopathy

• Arrhythmia

• Heart valve disease

• Pericarditis

Which condition is a sudden coronary artery blockage?

• Heart attack

• Arrhythmia

• Pericarditis

• Cardiomyopathy

What is the most common type of arrhythmia in the U.S.?

• Ventricular fibrillation

• Atrial fibrillation

• Bradyarrhythmia

• Junctional rhythm