18 Questions
Which of the following is NOT a component of the extracellular fluid compartment?
Intracellular fluid
What is the primary function of the interstitial fluid?
To provide nutrients and oxygen to cells
Which of the following is considered a transcellular fluid?
Cerebrospinal fluid
What is the primary function of the intracellular fluid?
To allow for cellular metabolism and signaling
Which of the following is true about the distribution of body fluids?
The intracellular fluid compartment is the total fluid content of all cells in the body
How does the ion balance between the intracellular and extracellular fluid compartments contribute to the body's homeostasis?
It all of the above
What is the main component of the extracellular fluid?
Plasma
Which of the following is NOT a common ion found in plasma?
K+
Which fluid surrounds the cells in the body?
Interstitial fluid
What is the primary function of hypervolemia?
Removal of excess water
How much of the Total Body Water (TBW) does the intracellular fluid account for?
2/3
Which type of fluid is found in cavities and contributes to the extravascular fluid component of extracellular fluid?
Transcellular fluid
Which of the following is NOT a component of the extracellular fluid compartment?
Intracellular fluid
What is the primary function of electrolytes in the body?
To maintain the balance of ions between intracellular and extracellular fluids
Which of the following statements about the distribution of body fluids is correct?
The intracellular fluid compartment accounts for approximately two-thirds of the total body fluid
What is the primary function of the interstitial fluid?
To provide a medium for the exchange of materials between cells and the bloodstream
Which of the following is NOT a component of the extracellular fluid compartment?
Intracellular fluid
What is the primary function of the collagen connective tissue in the extracellular fluid compartment?
To provide structural support for cells
Study Notes
Body Fluid Distribution
- Total Body Water (TBW) is approximately 38 L, divided into two main compartments: extracellular fluid (10 L) and intracellular fluid (28 L).
- Extracellular fluid makes up about one-third of TBW, while intracellular fluid makes up about two-thirds.
Extracellular Fluid Compartments
- Plasma is the fluid part of the blood, making up nearly half (55%) of the total blood volume.
- Plasma contains ions (Na+, Mg+, Ca+, HCO3-, and Cl-), clotting factors, hormones, glucose, and CO2.
- Interstitial fluid is the fluid surrounding the cells.
- Transcellular fluid is the fluid found in cavities, including cerebrospinal, intraocular, serous, synovial, and urinary tract fluids, and digestive juices.
Hypervolemia and Hypovolemia
- Hypervolemia, or fluid overload, occurs when there is an excess of fluid in the blood.
- Hypervolemia can be caused by high sodium intake or rapid blood transfusion.
- Treatment involves removing excess water and/or adding biomolecules.
- Hypovolemia is the opposite, where there is a deficiency of fluid in the blood.
Fluid Compartments
- Intracellular fluid compartment is the total fluid content of all cells in the body.
- Extravascular fluid compartment includes interstitial fluid, transcellular fluid, and connective tissue fluid.
- Intravascular fluid compartment refers to the fluid within the blood vessels.
Test your knowledge of the different compartments of body fluids including intracellular fluid, extracellular fluid, interstitial fluid, and more. Identify the distribution and types of fluids in various compartments of the body.
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