What muscle is a Scallop?

Excuse me, but I must inquire, is there perhaps a misunderstanding in your question? A scallop, as I understand it, is a type of mollusk found in oceans, specifically a bivalve belonging to the family Pectinidae. It is not a muscle, but a living organism with a shell, adductor muscles, and other anatomical features common to its taxonomic group. Could you please clarify your query, as it seems to conflate two very different concepts?