Trunk Muscles Actions Flashcards
Laterally Flex Vertebral Column to Same Side
UNILATERALLY Splenius Capitis (Head/Neck) Splenius Cervicis (Head/Neck) Erector Spinae- iliocostalis Erector Spinae- Longissimus Erector Spinae- Spinalis Intertransversarii External Oblique Internal Oblique Rectus Abdominis Quadratus Lumborum
Laterally Flex Vertebral Column to Opposite Side
NONE
Rotate Vertebral Column to Same Side
UNILATERALLY
Splenius Capitis (Head/Neck)
Splenius Cervicis (Head/Neck)
Internal Oblique
Rotate Vertebral Column to Opposite Side
UNILATERALLY Semispinalis Capitis Semispinalis Cervicis Multifidi Rotators External Oblique
Extend Vertebral Column
BILATERALLY Semispinalis Capitis Semispinalis Cervicis Splenius Capitis (Head/Neck) Splenius Cervicis (Head/Neck) Erector Spinae- iliocostalis Erector Spinae- Longissimus Erector Spinae- Spinalis Multifidi Rotators Interspinalis Intertransversarii Quadratus Lumborum (Unilaterally, Assist)
Flex Vertebral Column
BILATERALLY
External Oblique
Internal Oblique
Rectus Abdominis
Elevate Ribs during Inhalation
Serratus Posterior Superior Levator Costalis (Costarum?)
External Intercostals (Draw Ribs Superiorly to assist with Inhalation; Increases Space of Thoracic Cavity)
Depress Ribs during Exhalation
Serratus Posterior Inferior
Internal Intercostals (Draw Ribs Inferiorly to assist with Exhalation; Decreases Space of Thoracic Cavity)
Compress Abdominal Contents
BILATERALLY
External Oblique
Internal Oblique
Transverse Abdominis (Forced expiration by pulling the abdominal wall inward)
Tilt Pelvis Posteriorly
BILATERALLY
Rectus Abdominis
Laterally Tilt(Elevate) Pelvis
UNILATERALLY
Quadratus Lumborum
Fix Last Rib During Forced Inhalation and Exhalation
BILATERALLY
Quadratus Lumborum
Stabilize Pelvis and Lumbar Spine
BILATERALLY
Quadratus Lumborum
