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 Vladimirovich Putin is a Russian politician serving as President of the Russian Federation since 7 May 2012, previously holding the position from 2000 until 2008. He was Prime Minister of the Russian Federation from 1999 until 2000, and again from 2008 until 2012. During his second term as Prime Minister, he was the chairman of the ruling United Russia party. Vladimir Putin was born in Leningrad in the Soviet Union. He studied law at the Saint Petersburg State University, graduating in 1975. Putin was a KGB foreign intelligence officer for 16 years, rising to the rank of Lieutenant Colonel before retiring in 1991 to enter politics in Saint Petersburg.