10 Questions
What is the primary function of intracellular calcium [Ca2+]i in living cells?
Maintaining metabolism
What is a disadvantage of Ca2+ overload in cells?
Loss of regulation and cell death
How do cells regulate their intracellular calcium [Ca2+]i levels?
By relative impermeability of the plasma membrane
What is responsible for expelling Ca2+ from the cell using energy?
Ca2+ ATPase
What is one of the advantages of the ability to expel Ca2+ using Ca2+ ATPase?
Maintains large inward gradient
What is the resting membrane potential (RMP)?
The electrical potential difference across the plasma membrane of a cell at rest
What creates an electro-chemical gradient across the cell membrane?
Na-K ATPase pump pumping 3 Na out in exchange of 2 K in
What provides the basis for cell signaling?
Membrane potential
What is the primary function of the Na-K ATPase pump on the cell membrane?
Pumping 3Na out in exchange for 2K in to create an electro-chemical gradient
What does the resting membrane potential (RMP) express?
The potential inside the cell relative to the ECF
Explore the functions of intracellular calcium and how cells regulate its concentration. Understand how calcium can regulate different processes within the same cell.
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