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The gluteus maximus is the largest muscle in the human body. It is large and powerful because it has the job of keeping the trunk of the body in an erect posture. It is the chief antigravity muscle that aids in walking up stairs. The hardest working muscle is the heart.

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The human brain is the most complex arrangement of matter in the known universe. ... The eye is the only part of the brain that can be seen directly – this happens when the optician uses an ophthalmoscope and shines a bright light into your eye as part of an eye examination.

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Fingernails grow two to three times faster than toenails. A fingernail replaces itself in about six months while a toenail takes a year. ... Nails are basically protective and since our fingers are busier than our toes, they are more likely to need replacing. Also, constant exposure to sun and air may aid their growth.

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Each of your kidneys is made up of about a million filtering units called nephrons. Each nephron includes a filter, called the glomerulus, and a tubule. The nephrons work through a two-step process: the glomerulus filters your blood, and the tubule returns needed substances to your blood and removes wastes

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Once there, the sound waves vibrate three bones known as the ossicles, which are made up of the malleus, the incus, and the stapes. The stapes is the smallest bone in the human body.

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If kept unclean, the lint that accumulates inside our belly button is a gross mixture of clothing fibers, hair, and dead skin cells. Since men tend to have more hairs around that area, they have more lint formation.

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Your heart is an amazing organ. It continuously pumps oxygen and nutrient-rich blood throughout your body to sustain life. This fist-sized powerhouse beats (expands and contracts) 100,000 times per day, pumping five or six quarts of blood each minute, or about 2,000 gallons per day.

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Are bones stronger than concrete? Well, it depends. Bone typically has an elastic modulus that is like concrete but it's 10 times stronger in compression. As for the stainless-steel comparison, bone has a similar compressive strength but is three times lighter.

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Between 8-12 pints of blood are in the body of an average adult. 08. One unit of blood is ~525 mL, which is roughly the equivalent of one pint.

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New research shows that spit contains all sorts of juicy information about ... An underappreciated body fluid is emerging as a powerful tool for research, ... It has the potential to expose secrets of human biology and genetics...

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Closeup of the 6.2 mm (less than a quarter of an inch) long male Photocorynus spiniceps anglerfish, the world's smallest known, sexually mature vertebrate.

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Bombel, a miniature Appaloosa from Poland, has set the world record for being the shortest male horse. According to Guinness World Records, Bombel stands at just 56.7 cm (1 ft 10 in) from hoof to shoulder blades.

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Researchers at the University of Michigan just created the world's smallest computer (again). Their previous micro-computer, the Michigan Micro Mote, measured 2x2x4mm. It was a complete, functioning system powered by solar cell batteries.

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The world's smallest camera has just famously entered the Guinness Book of Records, with the OmniVision OV6948 as small as a grain of sand. OmniVision OV6948 measures in super-small at just 0.575 x 0.575 x 0.232mm and is good for 40,000-pixel color images using an RGB Bayer back-side-illuminating chip.

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The Peel P50 is a three-wheeled microcar originally made from 1962 to 1965 by the Peel Engineering Company on the Isle of Man. It was listed in the 2010 Guinness World Records as the smallest production car ever made.

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A baby born weighing just 245g (8.6oz), believed to be the tiniest on record to survive premature birth, has been discharged from hospital in the US. Baby Saybie weighed the same as a large apple when she was born at 23 weeks and three days in December 2018.