What do you know about your largest organ?
Skin is the largest organ in the body. “Skin occupies approximately 1.73 square meters [or more than 18.5 square feet]
There are four main receptors in the skin that respond to pressure: Meissner’s corpuscles, Merkel’s discs, Ruffini endings, and Pacinian corpuscles. Each receptor responds to a different type of touch. Respectively there are: light touch; pressure and texture; stretching; and vibration and deep pressure. Additionally, there are countless free nerve endings in the skin that gauge pain and temperature.
Skin plays an important role in regulating body temperature. Your skin acts as your body’s thermostat. When temperatures rise, sweat glands activate to cool the body down. When temperatures are lower, blood vessels in the skin tighten and limit the amount of hot blood that can reach the skin, preventing heat loss. Pores also become smaller when exposed to colder temperatures in order to retain heat.
Skin gets its color from a pigment called melanin. Skin color can range from very pale to very dark, depending on how much melanin the body makes. Everyone has the same amount of cells that produce melanin, which is made in the outer layer of the skin called the epidermis; but not everyone produces the same amount. The more melanin your body produces, the darker your skin.
Your skin regenerates itself. Your skin sheds its dead skin cells on a daily basis, creating a new layer of skin every 28 days.
Dust is partly made up of dead skin cells. Dust is an accumulation of many materials, including dirt, animal dander, sand, insect waste, and even dead skin cells.
Millions of bacteria live on the skin. The skin’s surface is home to surprisingly diverse communities of bacteria, collectively known as the skin microbiota.
Changes in the skin can reveal a lot about your health. Changes to the skin can be a sign that something is wrong. Rashes, hives, and itching may signal an allergic reaction, a bacterial skin infection, a viral infection, or an autoimmune disease. A changing mole may be a sign of skin cancer.
Pimples are not caused by dirt or diet.Acne can be caused or aggravated by menstruation and/or pregnancy due to changes in hormone levels, sweating, humidity, some medications, and certain cosmetics or hair preparations.
The sun does not make acne better. The initial, temporary drying effect and the blemish-concealing tan may fool you, but UV rays actually stimulate oil production. What’s more, the sun’s rays also thicken the outer layer of your skin, which blocks your pores and leads to breakouts.