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