Intercostal muscles

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Intercostal muscles
Intercostal muscles highlighted in dark red.
Details
Origin	Ribs 1–11
Insertion	Ribs 2–12
Artery	Intercostal arteries
Nerve	Intercostal nerves
Actions	Elevation or depression of the ribs
Identifiers
Latin	musculi intercostales
MeSH	D007366
FMA	13354
Anatomical terms of muscle [edit on Wikidata]

The intercostal muscles comprise many different groups of muscles that run between the ribs, and help form and move the chest wall. The intercostal muscles are mainly involved in the mechanical aspect of breathing by helping expand and shrink the size of the chest cavity.^[1]