Posted: July 24th, 2017

Norepinephrine stimulation of G proteins results in an increased intracellular concentration of calcium. This increase is not reversed by the extracellular calcium chelator EGTA. Which of the following is the most likely source of the increased intracellular calcium concentration?

Norepinephrine stimulation of G proteins results
in an increased intracellular concentration of
calcium. This increase is not reversed by the
extracellular calcium chelator EGTA. Which of
the following is the most likely source of the
increased intracellular calcium concentration?
(A) Endoplasmic reticulum
(B) Golgi complex
(C) Mitochondria
(D) Nucleus
(E) Plasma membrane