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Three general Membranes!

Three general Membranes! . Our goals. Describe the 3 membrane types And subtypes Know what tissue each is made of Determine where each would be found Describe each of their general functions . Membranes . They cover and line parts of the body

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Three general Membranes!

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  1. Three general Membranes!

  2. Our goals • Describe the 3 membrane types • And subtypes • Know what tissue each is made of • Determine where each would be found • Describe each of their general functions

  3. Membranes • They cover and line parts of the body • Made of more than one layer of at least 2 type tissue • What is made of more than one tissue??

  4. Serous Membranes • Line organs and walls in ventral cavities (what cavities reside there?) • Moist! • Make sliding along each other possible! 2 layers • 1.) simple squamous epithelium • 2.) thin Areolar CT

  5. Serous Membrane Functions • Enrich fluid from capillaries with some cell adhesion molecules • Fluid between membrane allows for slight movement

  6. 2 types of serous membranes • Visceral serosa – lines organ • Parietal serosa – lines cavity wall

  7. Heart • Parietal pericardium • Visceral pericardium Serosa Lungs • Parietal Pleura • Visceral Pleura Organs (abdominal pelvic) • Parietal peritoneum • Visceral peritoneum

  8. Mucous Membranes • Lines cavities “open” to exterior • Wet and moist! • Secretes mucous and other products • Don’t forget it is great for absorbtion • Layers: • simple Squamous or columnar • Loose CT • Smooth muscle (maybe)

  9. Cutaneous Membranes • Only “dry” membrane • Skin! • 2 Layers • Keratinized Stratified Squamous Cells! • Dense Irregular CT

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