To avoid anyone thinking that calcium or sodium is the cause of their stress, I just want to say that the cell biology you're reading about is about voltage-gated calcium channels, not about relative amounts of calcium in the bloodstream or interstitial fluid. Rather, calcium is used as a messenger to activate processes on the other side of the membrane. In the adrenal medulla, the primary messenger is an axonal depolarization.
In general, there's usually something very pathological going on for calcium to become dysregulated in the bloodstream, such as cancer, hyperparathyroidism, hypervitaminosis D, or hyperphosphatemia.
Sources: any physiology textbook, supplemented with a cell biology textbook.
I know but its all Google would throw up as any links related.
Hyperphosphatemia is very easy with supermarket cappuccino style beverages as is extremely hard water, and an NHS that fails to act on any diagnosis for several years, even from 3rd party's.
I say extremely hard water, based on the amount of chalky residue left behind in a situation best described as pan evaporation. Never seen anything like it before in all my life.
But then I only have to look at the water and food regulations to see the govt is using legislation to create health problems.
The perfect GDP boosting circle jerk to the unassuming uneducated person on the street, unless of course big business is influencing or writing the regulations?
In general, there's usually something very pathological going on for calcium to become dysregulated in the bloodstream, such as cancer, hyperparathyroidism, hypervitaminosis D, or hyperphosphatemia.
Sources: any physiology textbook, supplemented with a cell biology textbook.