In zootomy and dermatology, skin is an organ of the integumentary system composed of a layer of tissues that protect underlying muscles and organs. As the interface with the surroundings, it plays the most important role in protecting against pathogens. Its other main functions are insulation and temperature regulation, sensation and vitamin D and B synthesis. Skin has pigmentation, provided by melanocytes, which absorbs some of the potentially dangerous radiation in sunlight. It also contains DNA repair enzymes which reverse U ...

Including:

• Skin - Layers
• Skin - Types
• Skin - Functions
• Skin - Hygiene
• Skin - Aging and disease

Read more here: » Skin: Encyclopedia - Skin

Skin is composed of the epidermis and the dermis. Below these layers lies the hypodermis, which is not usually classified as a layer of skin. The outermost epidermis is made up of stratified squamous epithelium with an underlying basement membrane. It contains no blood vessels, and is nourished by diffusion from the dermis. The main type of cells which make up the epidermis are keratinocytes, with melanocytes and Langerhans cells also present. The epidermis can be further subdivided into the following strataSee also:

Skin, Skin - Layers, Skin - Types, Skin - Functions, Skin - Hygiene, Skin - Aging and disease

Read more here: » Skin: Encyclopedia II - Skin - Layers

Skin is composed of the epidermis and the dermis. Below these layers lies the hypodermis(subcutaneous adipose layer), which is not usually classified as a layer of skin. The outermost epidermis is consists of stratified squamous epithelium with an underlying basement membrane. It contains no blood vessels, and is nourished by diffusion from the dermis. The main type of cells which make up the epidermis are keratinocytes, with melanocytes and Langerhans cells also present. The epidermis can be further subdivided in ...

See also:

Skin, Skin - Layers, Skin - Types, Skin - Functions, Skin - Hygiene, Skin - Aging and disease

Read more here: » Skin: Encyclopedia II - Skin - Layers

The skin must be regularly cleaned. Unless enough care is taken it will become cracked or inflamed. Unclean skin favors the development of pathogenic organisms. The constantly peeling off dead cells of the epidermis mix with the secretions of the sweat and sebaceous glands and the dust found on the skin to form a filthy layer on its surface. If not washed away the dirt and dead skin slurry begins to decompose emitting a foul smell. Functions of the skin are disturbed when it is dirty and it becomes more easily damaged. The release of antibac ...

See also:

Skin, Skin - Layers, Skin - Types, Skin - Functions, Skin - Hygiene, Skin - Aging and disease

Read more here: » Skin: Encyclopedia II - Skin - Hygiene

As skin ages, it becomes thinner and more easily damaged. Intensifying this effect is the decreasing ability of skin to heal itself. Skin sagging is caused by the fall in elasticity. Skin also receives less blood flow and lower gland activity. In medicine, the branch concerned with the skin is called dermatology. The skin is subject to constant attack from without, and so can be afflicted by numerous ailments, such as: Tumors: Benign tumors of the skin: Squamous ...

See also:

Skin, Skin - Layers, Skin - Types, Skin - Functions, Skin - Hygiene, Skin - Aging and disease

Read more here: » Skin: Encyclopedia II - Skin - Aging and disease