Full Defination Of Human Skin and Hair

Full Defination Of Human Skin and Hair

Full Defination Of Human skin and hair

The skin, the largest organ in the human body, acts as a protective covering and is also a sense organ of touch. It is the thickest on the palms and soles and thinnest on the lips and eyelids. The skin cover around 2 sq m of area and weighs around 3.2 kg the colour of skin various among individuals and races. It depends on the amount and distribution of melanin, a pigment produced by the skin. Most of the skin in the human body is covered by hair. Hair, Nails, and glands are associated organs and derivatives of the skin.

Structure Of Skin

Full Defination of human skin and hair

The skin has three layers: epidermis, dermis, and the subcutaneous layer. The epidermis is the outermost layer of the skin. It has two layers of dead cells and two layers of living cells. The dead cells contain a tough protein called keratin, which gives a tough and waterproof nature to the outer surface of the skin. The living cells are supplied with blood from the dermis and contain a special cells known as melanocytes. Melanocytes produce a pigment called melanin that protects the skin from the harmful ultraviolet rays of the sun. The second layer, or the dermis, contains blood vessels that nourish the epidermis and remove the waste products. The fat and fibers in the dermis provides strength and flexibility to skin. The subcutaneous layer is the innermost layer. It stores fat that provides energy to the human body. The layer of fat helps to retain body heat and protects the body from injuries.

Functions Of The Skin

Full definition of human skin and hair

The skin performs many functions and protects the human body in many ways. It prevents bacteria and harmful Chemicals from entering the body and fluids from leaving the body. The skin regulate the internal temperature of the body by sweating. It detects temperature, touch, and vibration. Physical barriers such as skin and the lining of the lungs and gut a functional components of the adaptive immune system. The Secret Fluids containing components that limit the risk of microbial invasion.

Skin disorders

Full definition of human skin and hair

Skin disorders are of various types such as inflammations and infections. Information of the skin causes redness and itching of the skin. The skin becomes allergic in this condition. Infections are caused by bacteria, virus, fungi, our parasites. These microorganisms enter the broken skin and cause disease like ringworm, boils, cold sores, and shingles.

Nails

Full definition of human skin and hair

Nails are the epidermal appendages of skin found at the tips of the fingers and toes. They protect the fingers and toes from injury. A nail is divided into three parts Matrix, plate and bed. The part under the surface of the skin at the base of the nail is known as Matrix. The hard part of the nail is known is the plate and consists of dead cells containing Keratin. The part under the plate is called the bed.

Glands

Full definition of human skin and hair

The skin has two kinds of glands sebaceous glands and sweat glands. Sebaceous glands are oil producing glands located in the dermis layer of the skin. There releases and oil called sebum that liberates the hair and skin. Sweat glands are secreting glands in the skin. The forehead, soles and palms secret most of the sweat and cool the body.

Structure Of Hair

Full definition of human skin and hair

Hair is divided into parts including the shaft, root, hair bulb, and follicle. The shaft is the part of hair emerges outside the skin surface. A hair extends below the skin to a bag like structure known as the follicle. The root is the lowest part of a hair that forms and enlarged soft structure known as the hair bulb. The hair bulb sales divided rapidly to develop the hair. Popular is a projection into the hair bulb through the base of the follicle. It supplies the blood from the connective tissue and blood vessels to the growing cells.

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Milan Tomic

Hi. I’m Designer of Blog Magic. I’m CEO/Founder of ThemeXpose. I’m Creative Art Director, Web Designer, UI/UX Designer, Interaction Designer, Industrial Designer, Web Developer, Business Enthusiast, StartUp Enthusiast, Speaker, Writer and Photographer. Inspired to make things looks better.

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