lecture 6 renal acid-base balance Flashcards
what maintains pH
kidneys
what is an acid
a substance which donates protons
what is a base
a subastance that accepts a proton
in vessels where is pH higher
arterial
which vessel is more acidic and why
veins
carrying more CO2 which dissolves in water to make carbonic acid
what are the three things which look after H+ conc in the blood
chemical buffer
respiratory center
renal system
what is the bicarbonate buffer system
hydrogen and bicarbonate make carbonic acid
carbonic acid splits into CO2 and water
when you excersize why do you breathe quicker
producing more CO2
want to restore pH
inside blood cells what can the hydrogen ions become bound to
haemoglobin
what are the cells responsible for the water sodium balance in the CD balance
principal cells
what hormone do principal cells respond to
ADH
what affect does ADH have on principal cells
water resorption by aquaporins
what are the acid base balance cells in CD
intercalated cells
where is bicarbonate reabsorbed
PCT
how do the H and bicarbonate enter the intercalated cell
as CO2 and water
