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  1. Acetylcholine (ACh): What It Is, Function & Deficiency

    What is acetylcholine (ACh)? Acetylcholine (ACh) is a neurotransmitter, a chemical that carries messages from your brain to your body through nerve cells. It’s an excitatory neurotransmitter. …

  2. Acetylcholine - Wikipedia

    Parts in the body that use or are affected by acetylcholine are referred to as cholinergic. Acetylcholine is the neurotransmitter used at the neuromuscular junction. In other words, it is …

  3. Acetylcholine | Definition, Function, & Facts | Britannica

    Nov 28, 2025 · Acetylcholine is a neurotransmitter that acts within the central and peripheral nervous systems. It is the chief neurotransmitter of the parasympathetic nervous system, …

  4. Acetylcholine: What it is, function, and links with health

    Aug 25, 2023 · Acetylcholine is a chemical messenger, or neurotransmitter, that plays an important role in brain and muscle function. Imbalances in acetylcholine are linked with chronic …

  5. How Acetylcholine Functions in Your Body - Verywell Mind

    Dec 3, 2025 · What Is Acetylcholine and Why Is It Important? Acetylcholine (ACh) is a chemical that plays an important role in many different body functions. It is a neurotransmitter, and its …

  6. What is Acetylcholine? - Mental Health America

    Acetylcholine is an amino acid that acts as a neurotransmitter. Neurotransmitters send messages from one neuron to another in your nervous system. As one of the most plentiful …

  7. The Neurotransmitter Acetylcholine: What It Is, Why It Matters, …

    Sep 18, 2024 · Acetylcholine is a neurotransmitter—a chemical messenger that transmits signals between nerve cells (neurons) and other cells in the body. It was the first neurotransmitter to …

  8. Neurotransmitters: Acetylcholine – Introduction to Neuroscience

    Acetylcholine (ACh) is a small molecule neurotransmitter best known for its role at the neuromuscular junction, the synapse between a motor neuron and a muscle fiber. In the …

  9. Physiology, Acetylcholine - PubMed

    Apr 10, 2023 · The name "acetylcholine" is derived from its chemical structure, as it is an ester of acetic acid and choline. Tissues of the body that use this chemical messenger or are …

  10. Acetylcholine: Its Function and Roles in the Body

    Acetylcholine is a chemical messenger that plays a widespread role in how our bodies and brains function. It enables communication between nerve cells and other specialized cells, including …