The Skin Organ System

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The Skin Organ System

  1. 1. Integumentary System & The SKIN ORGAN BY: GERNELL AUSTIN 6/16/09
  2. 2. INTEGUMENTARY SYSTEM  Correct Pronunciation (in-teg-you-MEN-tah-ree)  Forms a protective two-way barrier around the entire body and aids in temperature regulation.  Made up of 5 structures: the SKIN organ, hair, nails, sweat glands, and sebaceous glands.
  3. 3. THE SKIN ORGAN  The major organ of the integumentary system, forming a barrier between the external & internal environments.  Top layer of skin made of epithelium tissue, which are composed of close-packed cells that form a covering.
  4. 4. THE MAKE UP OF SKIN  There are three layers  Epidermis- thin, outer membrane layer.  Dermis- middle, fibrous connective tissue layer.  Subcutaneous- innermost layer containing fatty tissue.  Dermatology (der-mah-TALL-oh- jee)- is the study of skin & the integumentary system.
  5. 5. THE BREAK DOWN- EPIDERMIS  Epidermis- consist of a type of epithelial tissue called stratified squamous epithelium, which is free of blood and depends on deeper layers for nourishment.  Basal layer-deepest layer of the epidermis, which forms stratified squamous epithelium new cells that push old cells to the top.  Melanin- contained in the basal layer and produces a Black pigment that is responsible for the coloring of skin and also protects against ultraviolet rays of the sun.
  6. 6. THE BREAK DOWN- DERMIS  Dermis- middle layer of skin with a very good blood supply -“true skin”.  Collagen Fibers- glue- like protein contained within the dermis and gives connective tissues its strength.  Dermis houses…  Hair follicles  Sweat glands  Blood vessels  Nerve fibers  Muscle fibers  And other elements
  7. 7. THE BREAK DOWN- SUBCUTANEOUS  Subcutaneous- also called “hypodermis”, is the deepest level of skin and composed of fat cells called lipocytes.  Lipocytes- protects the deeper tissues of the body & acts as insulation from heat and cold.
  8. 8. ACCESSORY ORGANS & SKIN DISORDERS  Accessory Organs of the SKIN- are the anatomical structures within the dermis such as hair, nails, sebaceous glands and sweat glands.  Some skin disorders are rosacea, eczema, and strawberry hemangioma. All of which can be managed by help from a dermatologist.  Lets all protect our skin by keeping it clean, properly moisturized and protected from extreme heat or cold at all times.  *Red text is hyperlinked for more information.

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