THE SKIN

• The skin - is a protective organ consisting of several layers of tissue and a namber of accessory organs, including nails, hair follicles, oil glands, and sweat glands.
• The skin also contains many nerve endings and serves as a sensory receptor for pain, temperature, pressure, and touch.
• The skin is a surprisingly complex organ consisting of three layers of tissue: the epidermis, dermis, and hypodermis or subcutaneous tissue
• Embedded in or on these layers of skin are several accessory organs: nails, hair, and the oil and sweat glands
• Epidermis- The outermost layer of the skin
• Squamous cell- These are flat cells in the upper (outer) part of the epidermis, which are constantly shed as new ones form
• Keratinocytes -are the most prominent cell within the epidermises form.
• Layers of Epidermis (Stratum)- Corneum, Lucidum, Granulosum, Spinosum, Basale
• Dermis - The inner layer of the two main layers of the skin.
• 2 layers of Dermis- Papillary layer and Reticular layer
• Hypodermis- also known as subcutaneous tissue and The bottom layer of skin in your body
• Epidermis- is the outer layer that you can see and feel . It protects the body from damage and regulate body temperature.
• Dermis- The dermis is the layer under the epidermis. It contains nerve endings, blood vessels , oil glands , and sweat glands
• HYPODERMIS (SUBCUTANEOUS TISSUE )- s a cushion-like layer consisting of loosely structured connective tissue and a large number of LIPOCYTES
• Lipocytes (LIH-poc-sites) -which are cells that manufacture and store fat.
• Nails- are hard plates of keratin that cover a portion of the skin on the surface of the fingers and toes.
• Hair- grows from follicles found in the dermis. Even before an object touches the skin, the hair makes it possible to feel that object
• Sebaccons (suh-BAY-shus) glands, or oil glands -secrete an oily substance called sebum (SEE-bum).
• Sudoriferous glands, commonly called sweat glands - are small coiled glands that produce sweat (perspiration). They open as on the of the skin and are especially abundant on t the palms soles, forehead, and armpits.