Muscle

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Muscle is a tissue in animal bodies. Muscles are basically tissue which may contract (shorten). They usually attach to bones and are the way animals move.

Muscular system
The human muscles, seen from the front, 19th century illustration
Details
Identifiers
Latin	systema musculare
MeSH	D009132
FMA	5022 30316, 5022
Anatomical terminology [edit on Wikidata]

Their main purpose is to help us to move our body parts. They are one of the major systems of all animal bodies. When a muscle is activated it contracts, making itself shorter and thicker, thereby pulling its ends closer.