Calcium channels

Calcium channels are specialized membrane proteins that facilitate the movement of calcium ions (Ca²⁺) across cell membranes. They play a crucial role in a variety of physiological processes in both excitable and non-excitable cells. Here are some key aspects of calcium channels: ### Types of Calcium Channels 1. **Voltage-Gated Calcium Channels (VGCCs)**: These channels open in response to changes in membrane potential, allowing Ca²⁺ to flow into the cell.