5 Questions
What is the primary function of homeostatic processes in the context of water balance?
To ensure the distribution of water among various body compartments
How much of the Total Body Water (TBW) is found in the Intra Cellular Fluid (ICF) in a 70-kg man?
About 28L
What systems are involved in the negative feedback loops that maintain water homeostasis?
Endocrine and autonomic nervous systems
What is the formula to calculate Total Body Water (TBW) based on body weight?
TBW = 0.6 × (body weight)
How is the Extra Cellular Fluid (ECF) compartmentalized?
Into plasma and interstitial fluid
Study Notes
Water Homeostasis
- Omeostatic processes maintain total water balance within narrow limits and distribute water among vascular, interstitial, and intracellular compartments.
Body Water Distribution
- In a 70-kg man, Total Body Water (TBW) is approximately 42L.
- Two-thirds of the water is in the Intra Cellular Fluid (ICF).
- One-third is in the Extra Cellular Fluid (ECF).
- ICF and ECF are in osmotic equilibrium.
Extra Cellular Fluid (ECF) Compartments
- ECF is divided into two compartments:
- A vascular compartment (plasma).
- An interstitial fluid compartment.
Calculating Body Water Compartments
- Total Body Water (TBW) = 0.6 × (body weight).
- Intra Cellular Fluid (ICF) = 0.4 × (body weight).
- Extra Cellular Fluid (ECF) = 0.2 × (body weight).
Sources of Water Intake
- Dietary liquids.
- Solid foods.
Test your knowledge of water homeostasis in the human body with this quiz. Explore the processes that help maintain the balance of water intake and distribution within the body's compartments. Ideal for students of medical courses and those interested in understanding the chemistry of homeostasis.
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