BODY CAVITIES AND MEMBRANES and skin Flashcards
Dorsal body cavities
Cranial cavity- contains the brain
Vertebral cavity- contains the spinal cord
Ventral body cavities
viseral organs (visera)
Thoratic cavity
heart and lungs
Abdominopelvic cavity
Mainly organs of digestive, urinary, reproductive systems
Membrane
A thin, pliable layer that covers or separates
Here we are concerned with multicellular membranes that line the body’s cavities and surfaces

membrane compostioin
epithilium and connective tissues
membrane functions
- Protection • Exchange
* Sensation, etc., partitioning and lubrication
types of membranes
mucous, serous, cutanious
Mucous membrane (mucosa)
- Produces mucus, enzymes, etc., by secretion - Lines the inside of body cavities that connect to the outside world
e. g., respiratory, digestive, reproductive, and urinary tracts
Mucous membrane tissue layers
• (Lumen = internal space) • Epithelium • Lamina propria (connective tissue) • (Muscle etc.) Are listed from deep to superficial
Serous membrane (serosa)
- Produces watery fluid, mainly by: filtration
- Lines outer surface of major visceral organs
- NOT continuous with outside world
Serous membrane tissue layers
- (Muscle etc.)
- Connective tissue
- Mesothelium (epithelium)
- (Serous cavity – fluid-filled)
- Mesothelium (epithelium)
- Connective tissue
Lumen
Space inside a hollow organ. Continuous to the outside world
- think inner lining is mucosa.
Lamina propria, epithelium.
Parietal serosa
Outside edge of the balloon/ body cavity
Cutaneous membrane
the skin.- Directly exposed to outside world
• Produces some watery fluids, by: secretion
