Heart Contraction and Blood Flow - NHLBI, NIH The animation below shows how your heart pumps blood. Click the "start" button to play the animation. Written and spoken explanations are provided with each frame. The animation shows how blood flows through the heart as it contracts and relaxes. Heartbeat Almost everyone has heard the real or recorded sound of a heartbeat. A heartbeat may seem like a simple, repeated event. Each side of your heart uses an inlet valve to help move blood between the atrium and ventricle. Each of your heart's ventricles also has an outlet valve. Each heartbeat has two basic parts: diastole (di-AS-toe-lee) and systole (SIS-toe-lee). During diastole, the atria and ventricles of your heart relax and begin to fill with blood. The atria then begin to relax. Pumping Action Your heart uses its four valves to ensure your blood flows in only one direction. Each valve has a set of flaps called leaflets or cusps that seal or open the valve. Oxygen-poor blood from the vena cavae fills your heart's right atrium.
Pavlov's Dog Lists of Nobel Prizes and Laureates Pavlov's Dog Play the Pavlov's Dog Game About the game Conditioned reflexes are reflexes you can learn compared to unconditioned reflexes that are built-in, or natural. The Nobel Prize This production explores the scientific achievements of Ivan Pavlov, awarded with the 1904 Nobel Prize in Physiology or Medicine for his pioneering studies of how the digestive system works. Reading Ivan Petrovich Pavlov (1849-1936) » Share this: Share on facebook Share on google_plusone_share Share on twitter More Sharing Services44 Share on email To cite this pageMLA style: "Pavlov's Dog". Recommended: The Legacy of Alfred Nobel On 27 November 1895 Alfred Nobel signed his last will in Paris. Play the Blood Typing Game Try to save some patients and learn about human blood types! Unlocking the Secrets of Our Cells Discover the 2012 awarded research on stem cells and cell signalling. Contact E-mail us Press Sitemap A-Z Index Frequently Asked Questions Terms Follow Follow us: Follow us:
PIG HEART!!!!!!! Lord of the Flies Lists of Nobel Prizes and Laureates Lord of the Flies Play the Lord of the Flies Game About the game The aim of this game is to introduce some basic analytical aspects of the book and to challenge the reader's memory through play. The Nobel Prize William Golding was awarded the 1983 Nobel Prize in Literature "for his novels which, with the perspicuity of realistic narrative art and the diversity and universality of myth, illuminate the human condition in the world of today" Read More » Share this: Share on facebook Share on google_plusone_share Share on twitter More Sharing Services19 Share on email To cite this pageMLA style: "Lord of the Flies". Recommended: The Legacy of Alfred Nobel On 27 November 1895 Alfred Nobel signed his last will in Paris. Play the Blood Typing Game Try to save some patients and learn about human blood types! Unlocking the Secrets of Our Cells Discover the 2012 awarded research on stem cells and cell signalling. Contact E-mail us Press Sitemap A-Z Index Terms Follow Follow us:
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