the human system of blood vessels - arteries, veins and capillaries - is over 60,000 miles long. that's long enough to go around the diameter of the world more than twice.
blood takes about 20 seconds to circulate throughout the entire system. the human heart creates enough pressure when it pumps, to squirt out blood 30 feet high and pumps nearly five quarts of blood through the body every 60 seconds.
blood takes about 20 seconds to circulate throughout the entire system. the human heart creates enough pressure when it pumps, to squirt out blood 30 feet high and pumps nearly five quarts of blood through the body every 60 seconds.
the human eye is composed of more than two million working parts can distinguish 500 shades of gray
the skin contains approximately 640,000 sense receptors
six billion steps of DNA are contained in a single cell. this DNA can be stretched six feet, but it is coiled up in the cell's nucleus, which measures only 1/2500 of an inch in diameter
the acid in your stomach is strong enough to dissolve razor blades
each time we blink, our brain kicks in and keeps things illuminated so the whole world doesn’t go dark each time we blink, which adds up to be about 20,000 times a day.
the human brain has a raw computational power between 1013 and 1016 operations per second.
what the...
the acid in your stomach is strong enough to dissolve razor blades
each time we blink, our brain kicks in and keeps things illuminated so the whole world doesn’t go dark each time we blink, which adds up to be about 20,000 times a day.
the human brain has a raw computational power between 1013 and 1016 operations per second.
what the...
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