What does acetylcholine mean?
Acetylcholine is a vital neurotransmitter found in both the central and peripheral nervous systems. It plays a crucial role in transmitting nerve impulses at synapses and neuromuscular junctions, facilitating muscle contraction, and regulating various autonomic functions such as heart rate and digestion. As a chemical compound, acetylcholine is synthesized from acetyl-CoA and choline through the action of the enzyme choline acetyltransferase. Its effects are mediated through two main types of receptors: muscarinic and nicotinic receptors. Acetylcholine is a key component in the regulation of the nervous system and has been a focus of research in neuroscience and pharmacology.
nounA choline molecule that has been acetylated, playing a key role as a neurotransmitter in the central and the peripheral nervous system.
- A type of neurotransmitter.
- A chemical compound involved in neural transmission.
"The release of acetylcholine from the nerve terminal triggers muscle contraction."
"Acetylcholine is released by the motor neurons that innervate skeletal muscle."
"The drug scopolamine blocks the action of acetylcholine at muscarinic receptors."
Rarely used in practice due to the primarily singular nature of the concept.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of acetylcholine
The term 'acetylcholine' is derived from the combination of 'acetyl', referring to the acetyl group, and 'choline', a type of organic compound. The word was first coined in the early 20th century. Acetylcholine is a type of ester, specifically an acetyl ester of choline.
Usage notes
Formal and scientific contexts, often used in biology, chemistry, and medicine.