Cardiovascular System

Delivers blood to all body cells and carries away waste

Eliminates carbon dioxide and oxygenates blood (lung pathway)

Where is the heart located?

The distal end of the heart

Supply blood to the heart itself, located on the surface of the heart

Encloses the heart (like a bag) and has two layers

Contains fluid to reduce friction

Wall of the heart: outer layer; reduces friction

Wall of the Heart: middle layer; mostly cardiac muscle

Wall of the Heart: thin inner lining, within chambers of the heart