Transcellular fluid is the portion of total body water located within spaces lined by epithelial cells.
Understanding Transcellular Fluid
Transcellular fluid is a key component of the body's fluid distribution. It's important to understand its location and relative volume.
Location and Composition
Transcellular fluid is found in specific locations within the body:
- Cerebrospinal fluid (CSF): Surrounds the brain and spinal cord.
- Aqueous humor: Found in the eye.
- Synovial fluid: Located in joints.
- Gastrointestinal tract fluid: Fluids within the digestive system.
- Bladder urine: Urine contained in the urinary bladder.
Volume and Significance
- According to reference information, transcellular fluid represents approximately 2.5% of total body water.
- It is the smallest component of extracellular fluid. Extracellular fluid also includes interstitial fluid and plasma.
Key Takeaways
| Feature | Description |
|---|---|
| Definition | Fluid within epithelial-lined spaces. |
| Part of | Extracellular fluid, and therefore total body water. |
| Volume | Approximately 2.5% of total body water. |
| Examples | CSF, aqueous humor, synovial fluid, gastrointestinal fluid, bladder urine, etc. |
