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The cardiac cycle is the performance of the human heart from the beginning of one heartbeat to the beginning of the next. [1] It consists of two periods: one during which the heart muscle relaxes and refills with blood, called diastole, following a period of robust contraction and pumping of blood, called systole. [1]
Openclipart, also called Open Clip Art Library, is an online media repository of free-content vector clip art.The project hosts over 160,000 free graphics and has billed itself as "the largest community of artists making the best free original clipart for you to use for absolutely any reason".
The heart is a muscular organ found in most animals. This organ pumps blood through the blood vessels of the circulatory system. [1] The pumped blood carries oxygen and nutrients to the body, while carrying metabolic waste such as carbon dioxide to the lungs. [2] In humans, the heart is approximately the size of a closed fist and is located ...
Meander (art) A meander or meandros[1] (Greek: Μαίανδρος) is a decorative border constructed from a continuous line, shaped into a repeated motif. Among some Italians, these patterns are known as "Greek Lines". Such a design may also be called the Greek fret or Greek key design, although these terms are modern designations even though ...
For the candy, see Love Hearts. The heart symbol is an ideograph used to express the idea of the " heart " in its metaphorical or symbolic sense. Represented by an anatomically inaccurate shape, the heart symbol is often used to represent the center of emotion, including affection and love, especially romantic love.
Isovolumic relaxation time (IVRT) is an interval in the cardiac cycle, from the aortic component of the second heart sound, that is, closure of the aortic valve, to onset of filling by opening of the mitral valve. [ 1 ] It can be used as an indicator of diastolic dysfunction. It can be measured by simultaneous Doppler echocardiography and M ...
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Music Box Key: Inserted into a magical music box, it will cause the box to play a song that compels whoever is listening to obey its lyrics. Whoever turns the key can supply the commands. Commands are carried out so long as the music is playing and the listener can hear it. Omega Key: Opens the lock on the demonic door. The first key created.