The human skin is the body’s outer covering and the largest organ of our integumentary system. Our skin is composed of up to seven layers of ectodermal tissue, which guards the muscles, bones, ligaments, and other internal organs.
- Human skin has three main layers, which are the epidermis, the dermis, and the hypodermis.
- We lose around two billion skin cells each day; If calculated as a total, it would be around 2 kg(4.5 pounds) a year.
- A pimple appears in our skin when a hair follicle becomes clogged with dried-up oil and thus comes out of the skin.
- An average adult’s skin weighs about 9 kilograms (20 pounds) and is the heaviest organ in our body.
- Our skin constitutes 15% of our total body weight.
- The skin of our eyelid is only 0.5 millimeters (0.02 inches) thick; this is the same width as a single hair.
- Most of people do not get hurt if pinched on the elbow skin.
- A square inch of skin has about 100 sweat glands.
- A square inch of our skin consists of 1300 nerve cells.
- There are 45 miles (72 km) of nerves in the skin of a human body.
- Every minute 30000 to 40000 dead skin cells fall from our body.
- Scars continue to look the same after years because the skin cells are replaced periodically, but the underlying collagen is not being replaced.
- Every square inch of our body has about 19,000,000 skin cells.
- The human skin sheds and regrows after every 27 days.
- The human skin contains 280000 heat receptors in total.
- Each square inch of skin would have about 50 heat receptors, 8 for cold, 100 for touch, and 800 for pain.
- One square inch of our skin contains 625 sweat glands.
- The thickness of the skin depends on the area of the body; it varies from one-half to 6mm.
- Melanin is a pigment present in the skin which is responsible for the color of the skin in a human being.
- The cells of the human skin multiply every second and replace the worn ones.
- The surface of the human skin is about 6.5 square feet or 2 meters.
- People with darker skin will not wrinkle as fast as people with a lighter shade of skin.
- There are more living organisms on the skin of a single human being than there are human beings on the surface of the earth.
- About 32 million bacteria live on every inch of our skin
- There are over 1000 species of bacteria that live on our skin.
- The human skin renews itself every five weeks.
- An average woman has about 17 square feet of skin. When a woman is in her ninth month of pregnancy, she has approximately 18.5 square feet of skin.
- The attachment of human muscles to the facial skin is what causes dimples.
- Skin can now be artificially grown. One amazing result of this is that the skin from one hand could be grown into enough to cover six football pitches.
- Over 14 species of fungi live between the skin of our toes.
