Membranes

Question 1

What are the different types of Covering and Lining Membranes?

Answer 1

There are 3 types:
• Cutaneous membrane (skin)
• Mucous membranes
• Serous membranes

Question 2

What is the Mucous Membrane?

Answer 2

Mucous Membranes
•Line organs and cavities that open to outside the body
•Epithelial sheet covers underlying loose areolar = lamina propria
•Epithelial tissue produces mucus
•Wet/moist membranes
•Examples: respiratory, digestive, urinary, and reproductive systems

Question 3

What is the Serous Membranes?

Answer 3

Serous Membranes
•Line closed cavities and their organs
•Simple squamous overlying loose areolar
•Epithelium produces a slippery serous fluid that reduces friction

Question 4

Types of Serous Membranes?

Answer 4

Serous Membranes
•Major components
- Visceral serous membrane (closest to organ)
- Parietal serous membrane (farthest from organ)
- Serous fluid between the two
•Types
- Pericardium
- Pleura
- Peritoneum

Question 5

What is the Pericardium?

Answer 5

Pericardium
•Serous membranes surrounding the heart
•Pericardial cavity is filled with pericardial fluid
- Reduces friction with contractions

Question 6

What is the Pleura?

Answer 6

Pleura
•Serous membrane that lines pleural cavity and surrounds lungs
•Pleural fluid reduces friction during breathing

Question 7

What is Peritoneum?

Answer 7

Peritoneum
•Serous membrane that lines abdominopelvic cavity and surrounds abdominopelvic organs
•Cavity is filled with peritoneal fluid
•Visceral peritoneum covers organs
•Parietal peritoneum lines abdominopelvic wall and diaphragm