How does the skin work?
Nutrients and oxygen in the blood pass from the capillaries into cells. The other main function of the capillaries is to help your body cool down if it gets too hot. The dermis is also the skin layer that contains the most sensory (feeling) cells and sweat glands.
The skin consists of two layers: the epidermis and the dermis. Beneath the dermis lies the hypodermis or subcutaneous fatty tissue. The skin has three main functions: protection, regulation and sensation. Wounding affects all the functions of the skin.
- The most important functions of the skin are:
- Regulates body temperature.
- Prevents loss of essential body fluids, and penetration of toxic substances.
- Protection of the body from harmful effects of the sun and radiation.
- Excretes toxic substances with sweat.
- Mechanical support.
- Moreover, bone stores crucial nutrients, minerals, and lipids and produces blood cells that nourish the body and play a vital role in protecting the body against infection. Bones have many functions, including the following: Support: Bones provide a framework for the attachment of muscles and other tissues.
- The actual skin color of different humans is affected by many substances, although the single most important substance is the pigment melanin. Melanin is produced within the skin in cells called melanocytes and it is the main determinant of the skin color of darker-skinned humans.
The skin performs six primary functions which include, protection, absorption, excretion, secretion, regulation and sensation.
- Protection. The skin functions as our first line of defense against toxins, radiation and harmful pollutants.
- The melanin pigments are produced in a specialized group of cells known as melanocytes. There are three basic types of melanin: eumelanin, pheomelanin, and neuromelanin. The most common type is eumelanin, of which there are two types—brown eumelanin and black eumelanin.
- The skin consists of two layers: the epidermis and the dermis. Beneath the dermis lies the hypodermis or subcutaneous fatty tissue. The skin has three main functions: protection, regulation and sensation.
- The main functions of the skin include:
- Protection of the human body.
- Sensation i.e. transmitting to the brain information about surroundings.
- Temperature regulation.
- Immunity i.e. the role of the skin within the immune system.
- Enables movement and growth without injury.
Skin is actually your body's largest organ by size. Your skin helps keep your body temperature even. Your skin also makes vitamin D (VYE-tuh-min D) when the sun shines on it. Vitamin D is important for the health of your bones and other parts of your body.
- As an organ, skin is made up of everything that covers one's body, including the nails and hair . In total, skin accounts for about 16 percent of a person's total body weight. Most adults' skin weighs in at 20 pounds or more.
- For the most complete sun protection:
- Use sunscreen. Use a broad-spectrum sunscreen with an SPF of at least 15.
- Seek shade. Avoid the sun between 10 a.m. and 4 p.m., when the sun's rays are strongest.
- Wear protective clothing. Cover your skin with tightly woven long-sleeved shirts, long pants and wide-brimmed hats.
- Though you can't see it happening, every minute of the day we lose about 30,000 to 40,000 dead skin cells off the surface of our skin. So just in the time it took you to read this far, you've probably lost about 40,000 cells. That's almost 9 pounds (4 kilograms) of cells every year!
Updated: 16th October 2019