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.
Now there's three major parts to the circulatory system; there's the blood, the blood vessels and the heart. The blood contains things like the liquid plasma, that is the non cellular part of the blood, there's the red blood cells, the white blood cells and then these cell parts called platelets that are involved in blood clotting.