Layers of the Epidermis

Descrição

Haematology and Anatomy (The Skin) Mapa Mental sobre Layers of the Epidermis, criado por gina_evans0312 em 16-10-2013.
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Mapa Mental por gina_evans0312, atualizado more than 1 year ago
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Criado por gina_evans0312 mais de 10 anos atrás
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Resumo de Recurso

Layers of the Epidermis
  1. Stratum Corneum (20-25 layers)
    1. Layers of keratinocytes
      1. Containment
        1. Water protection
          1. 28 day cycle
            1. 14 to reach SC
              1. 14 to be shed
              2. No nucleus
              3. Squaemous Epithelium
              4. Stratum Granulosum
                1. Contains increasingly kertainised cells
                  1. Keratin organises into fibres
                  2. Lamellar granules produce lipid 'glue
                    1. Some undergo apoptosis
                      1. They're too far from a nutrient source
                      2. Nuclei being to disintegrate
                      3. Stratum Basale
                        1. Basal Cells
                          1. Rapidly dividing
                            1. Keratinocytes
                            2. Merkel Cell
                              1. Associated with sensory nerves
                                1. Shapes/textures
                                2. Found at bottom of sweat duct
                                3. Melanocytes
                                  1. 8-10% of stratum basale
                                    1. Produce melanosomes
                                    2. Apoptosis of these cells under UV causes sunburn
                                  2. Stratum Spinosum
                                    1. Adjacted cells bonded by desmosomes
                                      1. Coarser keratin than in the stratum basalum
                                        1. Limited ability to divide
                                          1. Langerhans Cell
                                            1. Presents antigens of taken up microbes
                                              1. So T-cells will recognize them

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