The circulatory system comprises of the heart, the lungs and the  blood vessels. The main objective of the circulatory system is  transporting oxygenated (rich saturation of oxygen) blood around  the body. The de-oxygenated blood enters through the vena cava and  into the right atrium of the heart.
Vladimir Putin's Height. 5ft 6.5in (169 cm) The President of Russia. A newspaper once reported that there was criteria for the height of people in official photos with him, and that they shouldn't be taller. Shockingly, the newspaper said with a straight face Vladimir is believed to be between 5ft 2 and 5ft 5.
Vladimir Putin, the 58-year-old former president and current prime minister of Russia, has cultivated a swashbuckling public image over the past several years. He has piloted firefighting planes, darted whales, driven race cars, and taken a submersible 1,400 meters (4,600 ft) below the surface of Lake Baikal.