Question #ab843
1 Answer
Jan 18, 2018
It's only because of Na+ K+ ATP ase action about which you have read.
You have pointed out a nice thing about ion channels but they don't do it without any stimulus present. So,Na+ channels open only when a depolarizing signal is present.
But this Na+ K+ ATP ase pump keeps on pushing 3 Na+ out of the cell and 2 K+ inside continuously,even when you are sleeping and does so as long as ATPs are available,and creates this ionic imbalance (resting membrane potential).
Remember about 95 % of resting BMR(Basal Metabolic Rate) is due to the action of Na+ K+ ATP ase that means it keeps on utilising energy randomly.
