The skin is the largest organ in the human body. It is a wonderful and important piece. Flesh tissue with hair, nerves, glands and nails. He has wrinkles on his skin.
It acts as a barrier between external and internal environments. The skin varies in thickness and texture. For example. The skin under the eyes is paper thick but soft on the feet.
Skin takes up 20 square feet of our body’s surface area. It protects us from external elements, regulates body temperature by excreting water in the form of sweat, allows sensations of touch, heat and cold and also protects vital organs of our body such as bones and muscles.
Structure Of Skin
Provides a protective covering over our entire body, acting as the body’s first line of defense against foreign harmful substances or foreign particles Hair is made up of a protein called keratin, the same protein found in hooves, horns, claws and the nails of other animals.
It is the outermost layer of skin. The cells in this layer are called keratinocytes. Keratinocytes are made of a protein called keratin. Keratin strengthens the skin and makes it waterproof.
Melanin-producing melanocytes are also present at this stage. In addition, Merkel cells and Langerhans cells, part of the immune system, which are required to sense light and touch, are also present in the skin.
All the other layers of the epidermis lie below, with new cells constantly being produced. Consequently, the cells are pushed up by the continuous production of new cells. Below this threshold, they develop significantly due to the blood supply due to the presence of blood vessels.
As these cells approach the next layer, they differ in shape and size. This abnormality results in the next layer, the spin layer, on which the cells move to the particulate layer. Being away from blood therefore causes the cells to shrink and die. This leads to the formation of a protein called keratin.
The outermost layer of the skin is the stratum corneum, which consists of a covering of dead and uniform cells. These cells contain high amounts of keratin and provide elasticity to the skin. These cells are always cut from the top of the skin, which is stabilized by the cells in the basal layer.
Types of Epidermal Cells
- Melanocytes – These cells are found in the basal cell layer and produce melanin, a pigment absorbed by new cells to protect them from harmful sun rays.
- There are two factors that affect the amount of melanin in the human body – genetics and the amount of exposure to. sunlight . . .
- Keratinocytes – mature cells that originate from the basal layer and approach the outermost layer. Langerhans – These cells are unique in protecting the body against foreign particles and are therefore part of the immune system.
- The epidermis and dermis are connected by epidermal and epidermal junctions and include a chela layer.
This layer contains fat, fiber and collagen, which make the skin soft and firm. The skin synthesizes vitamin D to absorb calcium when exposed to sunlight.
It contains blood vessels that supply new cells.
They are also important for regulating body temperature. Cutaneous nerves are sensitive to environmental factors such as pressure and temperature. In addition, it contains hair follicles and sebaceous glands.
It works as a moisturizer and protects the skin by working against microorganisms.
Sweat glands function throughout the skin and secrete sweat through various channels. They help the body get rid of nutrients such as salts and urea.
The rector pili muscle attaches to each hair follicle. This helps the hair to stand up when we feel cold or strong emotions.
Function Of Skin
This is groundbreaking and important in skin function. It prevents pathogens from penetrating the skin and causing any damage.
People have thinner skin that loses less water. Human skin is thinner to prevent water loss due to dry desert air.
Thin-skinned organisms lose water constantly and must be near water to avoid dehydration. The skin is an important sensory organ that can sense touch, heat, pressure, cold, pain and pleasure.
Neural networks transmit these signals to the brain. That way we can respond appropriately to something that encourages us.
Our skin loses water through sweat, cooling itself, thereby removing heat from the body. Warm blood can also travel to the surface of the skin, where its heat radiates from the skin. The “swan” trait is also a temperature regulation response.