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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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