Those vital areas in the body that consist of the heart, arteries, veins, capillaries, and blood. These bodily parts are involved in the circulations of blood and to transport oxygen and nutrients to cells, and to carry waste products to the kidneys where waste is removed by filtration.

The term cardiovascular refers to the heart and blood vessels and these body elements work together to pump blood to all of the areas of the body.

• Blood is the fluid tissue which moves oxygen and nutrients to the other body tissues.
• In addition, blood returns some waste elements from the tissues to the kidneys and carries carbon dioxide back to the lungs.
• Blood cells are also important contributors to the immune system.
• The heart is that hollow, muscular organ, which is located between the lungs and under normal conditions, it is a very effective pump that supplies the power to maintain the blood flow that is needed throughout the entire body system.