177.
Inside the human heart
National Geographic have an impressive gallery showcasing one of the most beautiful, complex and important organs of the human anatomy: the heart.
From NG:
Tissue-paper thin but tough, the valves of the human heart open and close to pump 6 quarts (0.9 liters) of blood a day through 60,000 miles (97,000 kilometers) of vessels. That’s equivalent to 20 treks across the United States from coast to coast. The heart is a magnificent machine when it’s in good working order. But coronary heart disease is the number one killer of American men as well as women, resulting in 500,000 deaths in the United States and killing 7.2 million people worldwide each year.
Photograph by Lennart Nilsson
Notes
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Woah. Ok. That’s beautiful.
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Inside the human heart
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