1. Adapted from a Power Point by Cassie Clemans
Body Membranes
Adapted from a Power Point by
Cassie Clemans

2. Function of Membranes?

3. Cutaneous Membranes The skin! Dry membrane – why? Exposed to air
Protective functions
Tissue types?

4. Mucous Membranes (Mucosa)
Wet – why?
Bathed in mucous, saliva, or urine
Lines body cavities open to the exterior
Digestive
Respiratory
Urinary
Reproductive

5. Mucosa - Functions Protection – close to exterior
Absorption – small intestine
Secretion – respiratory, digestive
Tissue types?

6. Serous Membranes (Serosa)
Lines body cavities closed to the exterior
Thoracic cavity
Abdominopelvic cavity
Secretes serous fluid for lubrication

7. Naming Serosa Parietal – covers walls Visceral – covers organs
Made from one folded membrane
Examples:
Parietal & visceral pleura – line pleural cavity & lungs
Parietal & visceral pericardium – line pericardial cavity & heart
Parietal & visceral peritonium – line abdominal cavity & organs

8. Parietal & Visceral Serosa

9. Synovial Membranes
Lines tendon sheathes at joints and small openings called bursae
Secrete lubricating fluid (synovial fluid)
Cushion organs moving against each other
Connective tissue only