blood
1/13 of the human body is made up of blood
angiogenesis – the formation of new blood vessels
cardiovascular – the system in the human body that transports blood
red blood cells form in the bone marrow
endothelium – thin layer of cells that line inner surface of every blood vessel
renal artery – the blood vessel that carries unfiltered blood from the aorta to the kidney
renin – enzyme that is responsible for the regulation of blood pressure
there are 4 types of cells in a bone
yellow bone marrow – acts as a storehouse for fats
hexafu 