Review Note

Last Update: 01/28/2025 06:42 PM

Current Deck: PHYSIOLOGY::exam one

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Currently Published Content

Front

Where does the Ca come from and how is it controlled?

Back

APs in T tubules open voltage-gated C2+ channel (dihydropyridine receptor), which contacts SR Ca2+ channel (ryanodine receptor), releasing Ca2+ into cytosol. Ca rises from .1µM to 1µM over >80msec, then restored to SR via SR Ca2+ pump (SERCA).

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