5 - Fluid compartments Flashcards
How does the concentration of sodium differ inside and outside of cells?
higher concentration outside cells
How does the concentration of potassium differ inside and outside of cells?
higher conc inside cells
How does the concentration of calcium differ inside and outside of cells?
present in extremely low concentrations
extremely low conc inside of cells (although some compartments in the cells do store it e..g ER)
the concentration gradient is very steep because the intracellular concentration is so low
How does the concentration of chloride differ inside and outside of cells?
higher conc outside cells
How does the concentration of organic ions differ inside and outside of cells?
high conc inside of cells
How does the concentration of proteins differ inside and outside of cells?
present in low concentrations, but have a high charge
What is the difference (in terms of components) between the interstitial fluid and plasma?
plasma has more protein
How does the pH differ inside and outside of cells?
slightly higher outside the cell than inside
How does the osmolarity differ intracellularly and extracellularly?
no difference
What is the permeability of synthetic membrane with no proteins to hydrophobic molecules?
very permeable. - can pass through easily
What is the permeability of synthetic membrane with no proteins to small, uncharged polar molecules?
come will diffuse through, but the majority do not
What is the permeability of synthetic membrane with no proteins to large, uncharged polar molecules?
very few pass through
What is the permeability of synthetic membrane with no proteins to ions?
none pass through the membrane
What is oedema a cardinal sign of?
inflammation
infectious and inflammatory stimuli usually result in oedema
