Many medications work by artificially affecting that chemical signaling process. If your body needs certain cells to act, it can produce more of the chemical that can activate the cells’ receptors. How the cell responds depends on where it is and what it does. If a chemical with the right structure latches onto a receptor, it works like a key and activates the cell to respond a certain way. This uses specific sites on the surface of your cells, called receptors, where certain chemicals - called neurotransmitters - can latch on. Your body uses a chemical signaling system to control certain processes and functions.
They also are sometimes used to treat conditions related to your brain and nervous system. Beta-blockers are a class of medicines commonly used to treat a wide range of problems involving your heart and your circulatory system.
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