The leader's ability to lead is contingent upon various situational factors, including the leader's preferred style, the capabilities and behaviors of followers and also various other situational factors.
A. A. Calcium channel blockers are drugs used to lower blood pressure. They work by slowing the movement of calcium into the cells of the heart and blood vessel walls, which makes it easier for the heart to pump and widens blood vessels.As a result, the heart doesn't have to work as hard, and blood pressure lowers.. A. Calcium channel blockers are drugs used to lower blood pressure. They work by slowing the movement of calcium into the cells of the heart and blood vessel walls, which makes it easier for the heart to pump and widens blood vessels.
1 Regulation of electrolyte balance (e.g. sodium, potassium and calcium) 2  Osmoregulation: control of blood volume and body water content.  Blood pressure homeostasis: the renal system alters water retention and thirst to slowly change blood volume and keep blood pressure in a normal range.