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Heart in The Sky Wallpaper 2560X1600 is a desktop wallpaper for your computer and it is available in 2560X1600, resolution and below. Heart in The Sky Wallpaper 2560X1600 is part of the LOVE AND FRIENDSHIP WALLPAPERS collection of wallpapers. Heart in The Sky Wallpaper 2560X1600 | wallpaper was tagged with: Heart,in,The,Sky,Wallpaper,2560X1600 and above you can use keywords for searching related images. You also can download this desktop wallpaper using the links above. Also you can check the other related wallpapers on our website. We have the biggest and best world collection of wallpapers. How to set wallpaper on your desktop? Click the blinking download button and then set the Wallpaper on your desktop. Another approach is to select the right destop resolution and then set it to background to fit exactly. When you select the size download you can preview the wallpaper and Right Click ..Set to Destop on most OS. You can set any image as your Mac OS X desktops Background Wallpaper directly from Safari, all you need to do is right-click on the image and select "Use Image as Desktop Picture". The default setting appears to be "Fill Screen" so if you select an image smaller than your screen resolution it might not look that great. In terms of web browsers, this feature seems to be limited only to Safari, as Chrome and Firefox don't include the option. However, you can also right-click on any image within the Finder and set your background image there too.
FX Effects can be used in any Browser. Processed image can be saved only in Firefox, by right clicking on Wallpaper and using Save As... Option.
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The heart is a hollow muscle that pumps blood throughout the blood vessels by repeated, rhythmic contractions. It is found in all animals with a circulatory system (including all vertebrates).[1]
The term cardiac (as in cardiology) means "related to the heart" and comes from the Greek """""", kardia, for "heart".
The vertebrate heart is principally composed of cardiac muscle and connective tissue. Cardiac muscle is an involuntary striated muscle tissue found only in this organ and responsible for the ability of the heart to pump blood.
The average human heart, beating at 72 beats per minute, will beat approximately 2.5 billion times during an average 66 year lifespan. It weighs approximately 250 to 300 grams (9 to 11 oz) in females and 300 to 350 grams (11 to 12 oz) in males.[2]
The structure of the heart can vary among the different branches of the animal kingdom. (See Circulatory system.) Cephalopods have two "gill hearts" and one "systemic heart". In vertebrates, the heart lies in the anterior part of the body cavity, dorsal to the gut. It is always surrounded by a pericardium, which is usually a distinct structure, but may be continuous with the peritoneum in jawless and cartilaginous fish. Hagfishes, uniquely among vertebrates, also possess a second heart-like structure in the tail.[3]
The adult human heart has a mass of between 250 and 350 grams and is about the size of a fist.[4] It is located anterior to the vertebral column and posterior to the sternum.[5]
It is enclosed in a double-walled sac called the pericardium. It has two leaflets, the superficial is called the parietal pericardium and the inner one is the visceral pericardium. Between them there is some pericardium fluid which function is to permit them the easy slide with the heart movements. Outside the parietal pericardium there is a fibrous layer which depends from the mediastinal fascia and is called the fibrous pericardium.[6] This sac protects the heart, anchors it to the surrounding structures, but has no effect on ventricular hemodynamics in a health person.[7]
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