Quiz #9 Flashcards
Origin of Erector Spinae (Iliocostalis)
Iliac crest, sacrum, ribs
*Lateral layer
Insertion of Erector Spinae (Iliocostalis)
Ribs and cervical vertebrae
Action of Erector Spinae (Iliocostalis)
Thoracic/Lumbar:
Extension
Lateral flexion
Rotation
Origin of Erector Spinae (Longissimus)
Iliac crest and vertebrae
*Middle layer
Insertion of Erector Spinae (Longissimus)
Cervical and thoracic vertebrae, lower 9 ribs
Action of Erector Spinae (Longissimus)
Thoracic/Lumbar:
Extension
Lateral flexion
Rotation
Origin of Erector Spinae (Spinalis)
Vertebrae
*Medial layer
Insertion of Erector Spinae (Spinalis)
Cervical and thoracic vertebrae
Action of Erector Spinae (Spinalis)
Thoracic/Lumbar:
Extension
Lateral flexion
Rotation
Origin of Quadratus Lumborum
Posterior iliac crest
Insertion of Quadratus Lumborum
L1-L4
Action of Quadratus Lumborum
Lumbar:
Extension
Lateral flexion
Origin of Rectus Abdominis
Pubic crest
Insertion of Rectus Abdominis
Ribs 5-7 and xiphoid process
Action of Rectus Abodominsi
Lumbar:
Flexion
Weak lateral flexion
Origin of External Oblique
Lower 8 ribs at side of chest
Insertion of External Oblique
Ilium, pubic crest
Action of External Oblique
Lumbar:
Flexion
Rotation to opposite side
Lateral flexion
Origin of Internal oblique
Iliac crest
Insertion of Internal Oblique
Ribs 8-10
Action of Internal Oblique
Lumbar:
Flexion
Rotation
Lateral Flexion
Origin of Transverse Abdominus
Lower 6 ribs, Iliac crest
Insertion of Transverse Abdominus
Pubic crest
Action of Transverse Abdominus
Core stabilization
Co-contraction with back extensors
