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integumentary, Leslie VIeyra p2 - Coggle Diagram

- - - - stratum lucidium: layer between the stratum granulosum and the stratum corneum, which is found only in the thick skin of the palms and soles
      - stratum granulosum : helps to form a waterproof barrier that functions to prevent fluid loss from the body
      - stratum corneum: outermost layer; dead, flattened, keratinized cells; these are continually being shed from the outer skin surface
      - stratum spinosum: the layers of prickle cells over the layer of the stratum basale capable of undergoing mitosis
      - stratum germinativum: the layer of the epidermis that is closest to the basement membrane
      - melanocytes: found in the deepest layer of the epidermis and in dermis
    - - nerve endings:the structure in which the distal end of the axon of a nerve fiber terminates
      - sweat glands: a small gland that secretes sweat
      - oil glands: they secrete a substance called sebum, a mixture of fatty substances, entire sebum producing cells , and epitheleal cell debris
      - blood vessels: provides nutrients to the skin and helps regulate body temp
    - - loose connective tissues: holds organs in place and attaches epithelial tissue to other underlying tissues
      - fatty tissues: specialized to synthesize and contain large globules of fat
- - - - most common type of skin cancer
      - affect most light-skinned people over 40 years of age that is regularly exposed to sunlight
      - typically develop from hard, dry , scaly growths that have reddish bases
      - most common on neck, face, or scalp
      - grow slowly and are usually cured
    - - cutaneous Melanoma
        
        usually appears on the skin on the back of the limbs arising from normal-appearing skin or from a mole (nevus)
        
        the lesion spreads horizontally through the skin, but eventually may thicken and grow downward , invading deeper tissues
        
        once the lesion thickens and deepens, it becomes very difficult to treat