Skin Epidermis, Melanin And More

Last updated on July 16th, 2018

The outer appearance of your skin does not appear too complicated. The epidermis is just one of the part of your intricate organ called the skin which helps to perform various essential functions. Skin is the largest organ of the human body and has the necessary functionality to cover and protect the entire body. It protects the muscles, bones, and organs from environmental factors, heat, injury and any infection. You need to take excellent care of your skin and promote its good health as it serves to do the following:

  • Regulates and keeps the body temperature maintained
  • Maintains the moisture balances, fat and vitamin D to supply for the entire body
  • Helps to produce a sensory input into the brain through your sense of touch

The skin organ weighs anything between six and nine pounds. It is flat stretched out, and for example, the skin of a man weighing 150 pounds would cover about two square yards. The density of your skin is also created in such a way that it varies across the body. The thinnest area of the skin are the eyelids, and the thickest is the soles of your feet. The modified types of skin are your hair and nails. They serve as a particular protective purpose to the body. Body hair also protects the out layer of the skin and depending up to the area, and it serves as specialized functions such as the filter for the nose, and as a regulating balance in the inner ear. The responsibility of the nails is to protect and support the tips of your fingers and toes.

Take A Closer Look At The Skin Layers:

Skin Layers

The skin comprises of three main layers namely dermis, epidermis and subcutaneous tissues.  The health of the skin depends on each of these layers performing their functions to optimal levels and also support each of the other layers.

The Epidermis:

This is the outer layer of the skin. It consists of three sub-layers known as outer stratum corneum, middle squamous cell layer and the bottom basal cell layer. The visible part of the epidermis is called stratum corneum and is the layer of the dead skin cells. This layer makes use of a protein called keratin. It forms a substantial barrier between the outside environmental factors and the vulnerable skin cells present in the body. Various cells make the epidermis, and they are:

  • Basal Cells: These are found at the bottom of the skin layers and helps to reproduce new forms of keratinocytes continuously.
  • Keratinocytes: These are also known as squamous cells which are present in the middle of the epidermis and responsible for producing keratin. This protein forms a protective layer. This protein also helps a healthy nail and hair growth.
  • Melanocytes: This produce melanin which is a pigment that provides the color of the skin. People that have dark skin color contain melanocytes which produce more of melanin. When the skin is exposed to sunlight, it also enhances melanin production which leads to causing freckles or a suntan.
  • Langerhans cells: These are a part of the body’s immunity system and helps to combat infection.


The Dermis:

This is found below the layers of the epidermis and is held together by a protein called collagen. The dermis is vitally responsible to keep the epidermis healthy and growing as well as supports the structure which aids the body in many ways:

  • Nerve endings: They are capable of transmitting sensory input into the brain. This causes you to sense texture, pressure, heat, and pain.
  • Blood vessels: helps to deliver nutrients and oxygen to the epidermis. They also contribute to eliminating the debris.
  • Oil Glands: This keeps the skin moisturized and avoid the formation of hair follicles from becoming brittle.
  • Sweat glands: This plays the role to maintain the body temperature regulated.

The Subcutaneous Tissue:

The Subcutaneous Tissue

This is a layer of the collagen and fat cells. It is the bottom most layer of the skin. It helps to hold the body heat within and absorbs the impact of any infection or any injuries that could take place on the skin.

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