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Do you know the FUNCTION of the human CIRCULATORY system? In this video lesson, professor Paulo Jubilut explains in depth how the organs of the cardiovascular system work. At the end of this class, you will know the functions of the heart, veins and arteries. You will also have understood how heartbeat and blood pressure work. ★ Study at BIOLOGIA TOTAL: http://www.biologiatotal.com.br ★ INSTAGRAM: / paulojubilut ★ YOUTUBE: http://bit.ly/ZQarcx ★ FACEBOOK: / biologyjubilut ★ TWITTER: / prof_jubilut