Fluid and electrolytes Flashcards
in the intestine there is a net absorption of what compounds?
sodium, potassium, chloride, water
in the intestine there is a net secretion of what compound?
bicarb
in the colon there is a net absorption of what compounds?
sodium, chloride, water
in the colon there is a net secretion of what compounds?
bicarb and potassium
what maintains the sodium concentration in the intestinal cells?
basolateral Na/K ATPase pump
fluid secretion is mediated by regulating what transporter?
CFTR - chloride goes into lumen, sodium and water follow
how is potassium absorbed?
solvent drag - travels with water as salt concentration accumulates on basolateral side of cell
how is potassium secreted?
move between cells, attracted to net negative charge in lumen (sodium stay in cell, however, due to Na/K ATPase pump)
what is the effect of somatostatin on fluid movement?
promotes fluid absorption
