Integumentary System

Classification of body membranes
1. Epithelial Membranes
  1. a) Cutaneous Membrane
    1. Skin
    2. Superficial Epidermis
      1. Stratified and Brittle Epithelium
    3. Underlying Dermis
      1. Dense Connective Tissue
    4. Dry Membrane
  2. b) Mucous Membrane
    1. Absorption
    2. Secretion
  3. c) Serous Membrane
    1. Surrounds body cavities closed to the outside
    2. Serous fluid
      1. Avoids friction between organs
2. Connective Tissue Membrane
  1. Synovial Membranes
    1. Surround fibrous capsules that surround the joints and small sacs of connective tissue
    2. Cushions the organs that perform opposite movement during muscular activity
Functions
1. Protection
  1. Thanks to Keratin
  2. Protects deeper tissues against
    1. Shocks
    2. Ultraviolet Radiation
    3. Thermal Damage
    4. Desiccation
    5. Bacterial Damage
    6. Chemical Damage
2. Loss and retention of body heat
3. Mini Excretory System
  1. Water
  2. Salts
  3. Urea
  4. Uric Acid
4. Synthesize Vitamin D
5. Cutaneous Sensory Receptors
  1. Alert nervous system
Structure of the Skin
Skin Annexes
1. Skin Glands
  1. 1. Exocrine Glands
      1. Sebaceous
        higher production with higher production of male sex hormones
        Sebum
        Mixture of oily substances and fragmented cells
        Kills bacteria
      2. Sweat
        Eccrine
        Produce sweat
      3. Apocrine
        Activated by nerve fibers in the face of painful and stressful sensations and during sexual caresses
2. Nails
3. Hair and Hair Follicles
Homeostatic Imbalance of the Skin
1. Infections and Allergies
  1. Athlete's foot
  2. Boils and Carbuncles
  3. Cold Sores
  4. Contact Dermatitis
  5. Impetigo
2. Burns
  1. First degree
  2. Second degree
  3. Third degree
Diseases
1. Skin Cancer
  1. Malignant melanoma
    1. ABCD rule
2. Acne
3. Chloasma
4. Skin Fungus

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Integumentary System

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	Creado por Camila Guzmán hace más de 4 años