Cardiovascular System

Front

What prevents blood from flowing back into the atria when the ventricles contract?

Back

tricuspid and bicuspid valves

Front

When blood leaves this chamber of the heart, it heads out to the body (not the lungs)

Back

left ventricle

Front

One of the body's largest blood vessels that transports blood from the body region below the diaphragm to the heart

Back

inferior vena cava

Front

When this chamber contracts, it pushes blood through the tricuspid valve

Back

right atria

Front

This initiates the action potential that causes the heart to beat

Back

Sinoatrial node (SA node)

Front

When blood leaves this chamber of the heart, it heads to the lungs

Back

right ventricle

Front

This stops blood from flowing back into the ventricles each time they contract

Back

semilunar valves

Front

This is responsible for distributing electrical impulses through the heart

Back

Atrioventricular node

Front

This blood vessel splits in two and sends oxygen-poor blood away from the heart and to the lungs

Back

pulmonary trunk

Front

This chamber of the heart receives oxygenated blood from the lungs

Back

left atrium