Lesson

Trunk Muscles

ActionFlexionExtensionLateral FlexionRotation
Muscles-Rectus Abdominus

-External Oblique

-Internal Oblique

-Psoas Minor

-Psoas Major

-Quadratus Lumborum

-Multifidus

-Semispinalis

-Erector Spinae

(comprising 3 columns:

Iliocostalis, Longissimus & Spinalis)

-Interspinales

-Quadratus Lumborum

-Intertransversarii

-External Oblique

-Internal Oblique

-Rectus Abdominus

-Erector Spinae

-Multifidus

-Multifidus

-Rotatores

-Semispinalis

-Internal Oblique

-External Oblique

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