Final answer:
Calcium channel blockers are used to treat high blood pressure, chest pain, and abnormal heart rhythms. They work by binding to calcium channels, which slows down the inward movement of calcium ions.
Step-by-step explanation:
Calcium channel blockers are used for various medical conditions. They are commonly used to treat high blood pressure, chest pain (angina) caused by reduced blood supply to the heart muscle, and certain abnormal heart rhythms (arrhythmias). These blockers work by binding to calcium channels, which slows down the inward movement of calcium ions. This helps relax and widen blood vessels, reduce the workload on the heart, and regulate heartbeat.