L9 Flashcards
1
Q
what pH do living systems need?
A
7.0-7.6
about 7.4
2
Q
how is extracellular pH regulated
A
by the lungs and kindey, using HCO3-/CO2 buffering
3
Q
why must Ca2+ stay so low
A
Phosphate readily forms insoluble precipitate with Ca2+
builds up and causes calcification
kills cell
4
Q
electrogenic
A
net movement of charge generating a small current
5
Q
electroneutral
A
no net movement of charge
6
Q
how does same Ca2+ signals get different responses
A
temporal differences
7
Q
A
