When blood leaves this chamber of the heart, it heads out to the body.

One of the body’s largest blood vessels that transports blood from the body regionbelow the diaphragm to the heart.

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

Initiates the action potential that causes the heart to beat.

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

Stops blood from flowing back into the ventricles each time they contract.

Responsible for distributing electrical impulses throughout the heart.

This blood vessel splits in two and sends oxygen-poor blood to the lungs.

The chamber in the heart that receives oxygenated blood from the lungs.

____are the smallest blood vessels with the ____ walls in order to maximize diffusion of nutrients in and out of the interstitial fluid

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_____carry blood towards the heart and _____ carry blood away from the heart.

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