tenâ¢or /ËtÉnÉ/USA pronunciation n. the course of meaning that runs through something written or spoken; drift:[countable]The tenor of the meeting was one of tenseness. continuous course or movement:[countable]nothing to disturb the tenor of our lives. Music and Dance [uncountable] the adult male voice between the bass and the alto.
The pulmonary artery carries deoxygenated blood from the heart to the lungs and is the only artery in the body that carries deoxygenated blood. The pulmonary vein carries oxygenated blood from the lungs to the heart, and it is the only vein that carries oxygen-rich blood.
Blood is the final component of the circulatory system. Blood is made up of a liquid called plasma and three particles called red cells, white cells, and platelets. An average adult has about 5 quarts of blood in their body. The circulatory system works together with other body systems. It works with the respiratory system to deliver oxygen. When you take in a breath of air with your lungs, the oxygen passes into your blood stream.