neuropeptide
Meaning
any of a group of peptides that act as neurotransmitters or neuromodulators in the nervous system.
Structure
Usage
the neuropeptide substance p is involved in transmitting pain signals to the brain.
researchers are studying how specific neuropeptides influence hunger and satiety.
many neuropeptides act as neuromodulators, altering the effectiveness of synaptic transmission.
Etymology
the term 'neuropeptide' is a modern scientific compound, formed in the mid-20th century from two classical roots. the first element, 'neuro-', originates from the ancient greek 'neuron', which broadly referred to a sinew, tendon, or nerve, reflecting the early anatomical understanding of fibrous structures. the second element, 'peptide', has a more chemical origin, derived from the greek 'peptós' meaning 'cooked' or 'digested', relating to the breakdown of proteins. when combined, the word literally means a 'nerve-digested' or 'nerve-protein' fragment, logically describing a small protein-like molecule that functions specifically within the nervous system as a signaling agent, bridging the concepts of neural anatomy and biochemical function.
Analysis
neuro: from greek 'neuron', meaning 'nerve, sinew, tendon'. functions as a combining form denoting a relationship to nerves or the nervous system. peptide: from german 'peptid', itself from greek 'peptós', meaning 'digested'. functions as a noun-forming element denoting a compound consisting of amino acids.