Parts of the system

Heart - A hollow muscular organ that pumps blood through the circulatory system by rhythmic contraction and dilation.

Arteries- take blood away from the heart

Veins- take blood back to the heart

Red Blood Cells- remove carbon dioxide from the body and carries oxygen also is made in your bone marrow.

Capillaries-tiny blood vessels that pass blood from arteries to veins.

Capillaries