Skin Layers | Skin Anatomy and Skin Function | Skin Health | skin organ system | skin organ name | human skin colour
Layers of the Skin, Skin Function and Skin health, skin differences and Skin Health, skin organ system and skin organ name, human skin colour, Skin Anatomy.
Skin Function
Do you know what the largest organ in your body is? It’s not your brain or your heart or even your lungs. It’s your skin. Your skin is a thin layer of cells and tissues that covers almost all of your body. In fact, you have almost 20 million skin cells in each square inch of your organs tucked inside your body, controls your body temperature, and protests your insides from the outside world. Not having skin would like going outside in freezing temperatures without a coat.
Skin is an organ you probably don’t think about much, but its extremely important. It protects and covers the muscles, bones, and other organs and holds them together. It also keeps our bodies at right temperature, protests our bodies from harm, and gives us the sense of touch.
Layers of the Skin
Your skin is made up of three layers: the epidermis, dermis, and subcutaneous fat. Let’s take a look at each skin layers. skin palm
Epidermis (skin layers)
The outermost skin layers of the skin is the epidermis. The epidermis job is to protect your body from germs, Chemicals and other dangers in the air. Also, the epidermis is constantly making new cells to replace old, dead skin cells. This process is known as regeneration. Look at your epidermis now. Those cells will be there in a month, as your skin gets rid of tens of thousands of cells a day.
The epidermis is the part of the skin that you can see. It’s thin in some place but thicker in other places. This layer of skin is responsible for making new skin cells, giving skin its color, and protecting your body. New skin cells form at the bottom of the epidermis, and they take about 2 weeks to a month to move to the top. During this time, older cells on the die and rise to the surface of your skin, where they eventually flake off.
The outer skin layers of your skin is the epidermis, it is found thickest on the palms of your hands and soles of your feet (around 1.5mm thick).
Dermis (skin layers)
The dermis is the second skin layers of the skin. one of its main jobs is to make it possible for you to feel things, like pain or heat, because the nerve endings are in this skin layers. Has your skin ever felt oily? You have your dermis to thank for that, as this is the skin layers where oil is made, as well as sweat and hair.
The dermis is beneath the epidermis and contains nerve endings, blood vessels, oil glands, and sweat glands, Nerve endings work with your nervous system to send messages to the brain about what you touch and feel. For instance, your nerve endings might alert the brain that a surface feels hot. Using this information, the brain sends a message telling you to move your hand. The tiny blood vessels in your dermis bring oxygen and nutrients to your skin cells to keep them healthy.
Subcutaneous Fat (skin layers)
The innermost skin layers of the skin is the fatty tissue, or subcutaneous fat. Think of this skin layers like a piece of tape, since it connects your skin to your muscles and bones. This layer is also responsible for regulating your body temperature and storing fat cells.
The bottom skin layers is subcutaneous fat. As you might guess, It’s made up mostly of fat. It helps keep your body warm and absorbs shocks, like if you bump into something hard or fall down. Hair follicles have their roots in the subcutaneous layer, and they rise up through the dermis.
Skin Differences
Think about the different people in the world. Some of them have skin that looks like yours, while other people’s skin might be darker or lighter. This is a result of the amount of melanin in the skin. The more melanin, the darker the skin. Melanin’s main job is to protect you from the sun’s rays. If you have light skin, it is more likely that you will get a sunburn.
If skin is severely damage then it may try to heal by forming scar tissue. Scar tissue is not the same as normal skin tissue, it often appears discolored and lacks sweat glands and hair. The Color of Human skin depends on the amount of pigment melanin that the body produces. Small amounts of melanin result in light skin while large amounts result in dark skin.
Areas that experience repeated friction or pressure can form tough, thick skin known as a callus. Common examples of calluses can be seen on the hands of tennis player and the fingertips of guitarists.
All mammals have some hair on their skin, even if it isn’t easy for you to see. Rhinoceros’s are protect by thick skin which can be between 1.5cm and 5cm deep.
Although polar bears have both white and transparent (see through) fur, their skin is actually black. Amphibians such as frogs have unique skin. Rather than drinking water, frogs actually soak it into their body through their skin. They also use their skin to absorb around half the air they need.
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