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Classification of Body Membranes

Classification of Body Membranes. Epithelial Membranes. 1. Cutaneous Membrane 2. Mucous Membranes 3. Serous Membranes. 1. Cutaneous Membrane. Skin! Stratified squamous epithelium with keratin Has an underlying dermis Differs from the other types of epithelial membranes: It is DRY!.

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Classification of Body Membranes

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  1. Classification of Body Membranes

  2. Epithelial Membranes • 1. Cutaneous Membrane • 2. Mucous Membranes • 3. Serous Membranes

  3. 1. Cutaneous Membrane • Skin! • Stratified squamous epithelium with keratin • Has an underlying dermis • Differs from the other types of epithelial membranes: It is DRY!

  4. Cutaneous Membrane

  5. 2. Mucous Membranes • Lines all body cavities OPEN to the outside world • Either stratified squamous or simple columnar • Moist/Wet • Absorption • Secretion

  6. Mucous Membranes

  7. 3. Serous Membranes • Line body cavities CLOSED to the outside world • Single layer of simple squamous epithelium • Serous membranes occur in pairs • Visceral • Parietal • Both membranes secrete “serous fluid” so that organs can move without friction

  8. Parietal vs. Visceral

  9. Pleura & Pericardium

  10. Peritoneum

  11. Connective Tissue Membranes • NO epithelium; just connective tissue • Synovial membranes • Line the capsules that surround joints • Provide a smooth surface • Secrete “synovial fluid,” which lubricates

  12. Synovial Membranes

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