Epithelial Membranes

Question 1

Dry membrane exposed to air
Covers the surface of the skin
-Outermost Protective boundary
Construction:
-Epidermis is composed of keratinized stratified squamous epithelium
-Dermis is mostly dense fibrous connective tissue.

Answer 1

Cutaneous (skin)

Question 2

Moist membranes
Lines body cavities that open to the exterior of the body
-Esophagus, stomach, small intestine, large intestine, rectum
-urinary tracts
-reproductive tracts
Adapted for Absorption and Secretion
Construction
-Epithelium type depends on site
-Loose connective tissue (lamina propria)

Answer 2

Mucous Membranes (mucosae)

Question 3

Line body cavities that are closed to the exterior of the body.
Occurs in pairs, seperated by serous fluid by serous by serous fluid, with a visceral and parietal layer.
Parietal- covers walls of the cavity
Visceral- covers walls outside of organs in the cavity
Serous Fluid- Allows organ to glide along a cavity wall
Construction:
-Simple squamous epithelium
-Aeolar connective tissue
* The specific names of the serous membranes depend on their locations.
-Specific serous membranes
*Peritoneum- Abdominal Cavity
*Pleura- Around Lungs
*Pericardium- Around Heart

Answer 3

serous membranes (serosae )

Question 4

• Loose areolar connective tissue only (no epithelial tissue)
• Line fibrous capsules surrounding joints.
• Line bursae and tendon sheaths at joints.
• Provide a smooth surface.
• Secrete a lubricating fluid to cushion organs moving against each other during muscle activity. (secretive)
• Ligament
• Joint cavity -Contains synovial fluid
• Articular cavity

Answer 4

Synovial Membrane