Acetylcholine is a neurotransmitter that plays a role in memory, learning, attention, motivation and arousal. It also plays a role in contracting voluntary muscles.

In the brain, acetylcholine functions as a neurotransmitter and as a neuromodulator. The brain contains a number of cholinergic areas, each with distinct functions; such as playing an important role in …

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 main role is …

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, which contracts …

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 conditions, such as...

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 neurotransmitters, …

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 presynaptic terminal, …