acetylcholine

Acetylcholine is a chemical messenger in the body, primarily involved in transmitting signals between nerve cells and muscles. It plays a crucial role in many functions, including muscle contraction, attention, memory, and learning. When a nerve cell is activated, it releases acetylcholine, which binds to receptors on nearby muscle cells, prompting them to contract. In the brain, it helps regulate various cognitive processes. Imbalances in acetylcholine can be linked to conditions like Alzheimer’s disease and myasthenia gravis, highlighting its importance in both movement and cognitive function.