How the drugs act on nervous system
The nervous system is the body’s communication highway, controlling everything from heartbeat and breathing to thoughts, emotions, and memory. Because of its central role, the nervous system is a major target for many drugs—both therapeutic medications and substances of abuse. Understanding how drugs act on the nervous system helps us appreciate their benefits in medicine as well as their potential risks. 1. The Basics of the Nervous System The nervous system is divided into two main parts: Central Nervous System (CNS): The brain and spinal cord, which process information and coordinate responses. Peripheral Nervous System (PNS): The network of nerves outside the CNS, carrying signals to and from organs, muscles, and glands. Communication between nerve cells (neurons) happens through electrical impulses and chemical messengers called neurotransmitters. 2. How Drugs Influence Nerve Signaling Drugs act on the nervous system by altering the way neurons send, receive, or process sign...