Membranes Flashcards
- Physical barriers
- Line or cover portions of the body
- Consist of:
- An epithelium
- Supported by connective tissue
Membranes
• Membranes consist of:
- An epithelium
* Supported by connective tissue
• Four Types of Membranes
- Mucous membranes
- Serous membranes
- Cutaneous membrane
- Synovial membranes
- Line passageways that have external connections
- Epithelial surfaces must be moist
- —To reduce friction
- —To facilitate absorption and excretion
- Lamina propria
- —Is areolar tissue
• Mucous Membranes (Mucosae)
• In digestive, respiratory, urinary, and reproductive
tracts
• Mucous Membranes (Mucosae)
Why must Epithelial surfaces be moist?
- —To reduce friction
* —To facilitate absorption and excretion
Is areolar tissue
Lamina propria
are coated with the
secretions of mucous glands.
Mucous membranes
membranes line the digestive, respiratory,
urinary, and reproductive tracts
Mucous membranes
- Line cavities not open to the outside
- Are thin but strong
- Have fluid transudate to reduce friction
- Have a parietal portion covering the cavity
- Have a visceral portion (serosa) covering the organs
• Serous Membranes
visceral portion of • Serous Membranes is also known as ______, which covers the organs
serosa
• Three Serous Membranes:
1. Pleura • Lines pleural cavities • Covers lungs 2. Peritoneum • Lines peritoneal cavity • Covers abdominal organs 3. Pericardium • Lines pericardial cavity • Covers heart
- Lines pleural cavities
* Covers lungs
- Pleura
- Lines peritoneal cavity
* Covers abdominal organs
- Peritoneum
- Lines pericardial cavity
* Covers heart
- Pericardium
line the ventral body
cavities (the peritoneal, pleural, and
pericardial cavities).
Serous membranes
- Is skin, surface of the body
* Thick, waterproof, and dry
Cutaneous Membrane
- Line moving, articulating joint cavities
- Produce synovial fluid (lubricant)
- Protect the ends of bones
- Lack a true epithelium
• Synovial Membranes
Acts as a lubricant for membranes
synovial fluid (found in synovial membranes)
covers the
outer surface of the body.
cutaneous membrane or most commonly referred to as the skin
line joint cavities and produce
the fluid within the joint.
Synovial membranes
