Title: Physiology 2130 / Module 2: Fluids

Header: What is the fluid within the compartment? What is its relative size in terms of total body water (TBW)?

Q: Due to homeostasis the [...] of fluids and [...] of ions is closely controlled so that our organ systems can function properly.
A: volume; concentration
Extra: Changes in these values will result in a 'not-so-ideal' internal environment, which will cause cells to function improperly.

ICF is the intracellular fluid compartment and ECF is the extracellular fluid compartment.
ICF is everything inside of the cell where ECF is everything outside of the cell.

Q: 2 types of ECF are [...] and [...]
A: interstitial fluid; plasma
Extra: ECF = Extracellular Fluid Compartment

Q: Interstitial fluid is [...]
A: the fluid directly outside of the cell.

Q: Plasma is [...]
A: the watery portion of the blood.

Q: A liquid containing suspended substances that does not settle out of solution is a [...]
A: colloidal solution.

Q: Since water instake closely matches water loss through the kidneys, lungs, digestive tract, and skin, [...] remains relatively constant.
A: plasma volume

Q: Plasma proteins include [...],[...] and [...]
A: albumins; globulins; fibrinogens.

Q: Plasma is a [...] because plasma proteins/substances remain suspended when centrifuged.
A: colloidal solution

Header: Label the layer

Header: What ions have this specific relative concentration?

Q: There is a big difference in ion concentrations between the [...] and the [...]
A: inside of the cell; outside of the cell

Q: There is a small difference in ion concentration between the [...] and the [...]
A: plasma; interstital fluid.

Q: The [...] aka the [...] forms a physical barrier between the ICF and the ECF, and is selectively permeable. There are channels, pores and special transport systems that regulate passage of molecules across the membrane.
A: cell membrane; plasma membrane

Q: The concentrations of ions differ outside and inside the cell so drastically because [...]
A: the cell membrane is selectively permeable.