Skin med

Skin med

1. Skin

   • Layers of Skin
     • Epidermis
       • Stratum Basale
         • First layer
         • The division cells
       • Stratum Spinosum
         • Second layer
         • Dermosomes formed - Strength
       • Stratum Granulosum
         • Third layer
         • most keratin secreted
         • Granules secreted
       • Stratum Luciderm
         • fourth layer
         • Organelles die
       • Stratum Cornium
         • final layer
         • dead cells, stacked
     • Dermis
       • Papillary
         • Vascular
         • Lymph and nerve
       • Reticular
         • Collagen and elastin fibres
     • Hypodermis
     • Epidermal junction
       • Structure
         • type 4 collagen
         • GAGs
         • Glycoproteins
       • Function
         • adhesion between layer
         • barrier
         • organisation of cells
   • Appendages/ Specialisations
     • Hair
       • Thermoregulation
     • Sweat glands
       • Eccrine
         • Sweat
       • Apocrine
         • localised aromatic sweat
     • Sebaceous gland
       • secrete oily grease (waterprooifing
   • Functions
     • Barrier and protection
     • Sensation
     • Metabolism and storage
     • Thermoregulation
   • Cell types
     • Laangerhaan cells
       • Immuno function
     • Keratinocytes
       • structural protein secretion
     • Merkel cells
       • Neuroendocrine function
     • Melanocyte
       • Skin pigmentation
   • Innervation of skin
     • Sensory - Afferent nerve endings
       • Pacinian corpuscle
         • Deep pressure and vibration
         • Hypodermis
         • Modified Scwann cells
       • Meissners corpuscle
         • Papillary dermis
         • Mechano-receptors - light pressure
       • Ruffini corpuscle
         • Mechanoreceptors - stretching of skin
       • Free nerve endings
         • Pain, Itch, temperature
         • Papillary Dermis
     • Efferent nerve endings
       • Blood vessel diametre and blood flow
       • Thermo regulation communication
   • Healing
     • Resolution
       • replace with cell
       • minimal or no scarring
     • Repair
       • replace with connective tissue
       • Scarring