Simple Organs: Membranes

Question 1

Membranes Overview

Answer 1

• Simplest Organs
• Only 2 types
• Consist of epithelium ATTACHED to CT (with basement membrane BETWEEN)

Question 2

Mucous Membranes (mucosa)

Answer 2

-Line cavities which open directly to the body exterior
-2 Layers:
1- Epithelial layer (avascular) varies from simple squamous to pseudostratified
2- CT ( loose areolar - vascular) named the LAMINA PROPRIA, nourishes epithelial cells

Question 3

Serous Membranes (serosa)

Answer 3

• Line closed cavities (covers the organs in said cavities)
  -double membranes - each composed of epithelial layers next to serous cavity and CTs (areolar):
  1 -Parietal Layer - against cavity wall
  2- Visceral Layer- against organ

Question 4

Serous Membranes part 2 (Name for location)

Answer 4

-Serous fluid between layers
-Name for location:
Pleura – lung
Peritoneum – Abdominal organs
Pericardium – heart

Question 5

Synovial Membranes

Answer 5

• in joints

- Areolar CT, no epithelium (only ONE tissue)

Question 6

Cutaneous Membranes

Answer 6

-Skin
Epithelium = stratified squamous
CT= areolar and dense irregular