The term 'blood supplier' can be broken down into two crossword solutions: AORTA (5 letters) and ARTERY (6 letters). The AORTA is the largest ARTERY in the human body, originating from the left ventricle of the heart and extending down to the abdomen. It supplies oxygenated blood to the entire body. An ARTERY is a type of blood vessel that carries oxygenated blood away from the heart to the rest of the body. Arteries are the main suppliers of oxygenated blood throughout the body.