What are three ways the smooth muscle cell can increase calcium concentration inside the cell?
1. Voltage-gated dihydropyridine receptors in the plasma membrane function as calcium channels.
2. iononotropic Receptor activated Calcium
3. Hormone linked G-coupled protein ligand receptors-uses 2nd messenger to release Ca inside the cell it self, Phospholipase C liberates DAG and IP3, and releases more calcium