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What is 1 + 3?
Cardiovascular/Circulatory System Organs (3), Functions (3), The Heart's Layers (3), Blood cells (3)
a hollow muscular organ that pumps blood throughout the body
the fluid that is pumped by the heart, consists of blood cells and plasma
hollow tubes that transport blood through the body
carry blood away from the heart
carry blood from the capillaries back to the heart
the exchange of gases take place in these microscopic blood vessels
outside, external covering of heart (2 layers)
inner, muscular layer of heart (middle)
innermost layer, smooth and same as inside blood vassel
Red blood cells that transport oxygen
white blood cells; fight infections and are formed in the bone marrow
platelets, blood-clotting cell fragments that stop bleeding