classification of body membranes. epithelial membranes 1. cutaneous membrane 2. mucous membranes ...
Post on 15-Dec-2015
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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!
Cutaneous Membrane
2. Mucous Membranes
Lines all body cavities OPEN to the outside world
Either stratified squamous or simple columnar
Moist/Wet
Absorption
Secretion
Mucous Membranes
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
Parietal vs. Visceral
Pleura & Pericardium
Peritoneum
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
Synovial Membranes
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