The cholinergic system is a group of neurons that use acetylcholine as their main neurotransmitter. The spelling of "cholinergic" comes from the Greek word "cholē" meaning "bile" and "ergon" meaning "work". The IPA phonetic transcription for "cholinergic" is /kəʊˈlɪnədʒɪk/, with the stress on the second syllable. The "ch" sound is pronounced as a voiceless velar fricative, similar to the "k" sound in "sky". The "i" is pronounced as a short vowel sound, and the "g" is pronounced as a voiced velar stop.
The term "cholinergic system" can be broken down into two parts: "cholinergic" and "system".
The word "cholinergic" comes from the root word "choline", which refers to a nitrogenous organic compound found in many living organisms. This term was coined by German chemist Adolf Strecker in 1865 and derived from the Greek word "chole" meaning "bile" and the suffix "-ine" indicating a composition or derivative.
The term "system" comes from the Latin word "systema", which means a structured or organized set of components or parts working together to achieve a common function or purpose.
When combined, the term "cholinergic system" refers to the collection of structures and processes in the body that involve or are influenced by the neurotransmitter acetylcholine, which is derived from choline.