OT 510: Muscles of the Vertebral Column
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13 Terms
Cervical Muscles
1. Prevertebral Group
2. Sternocleidomastoid (SMC)
3. Splenius Capitis and Cervices (SCC)
Prime action of the preverterbral group (anterior)
flexion
Prime action of SMC (lateral)
flexion
lateral flexion
rotation to opposite side
Prime action of SCC (posterior)
extension
lateral flexion
rotation to same side
Thoraco-lumbar muscles
1. Rectus Abdominus
2. External Obliques
3. Internal Obliques
4. Quadratus Lumborum
5. Illiopsoas
Prime action of rectus abdominus (anterior)
flexion
Prime action of external obliques (anterior)
flexion
lateral flexion
rotation to opposite side
Prime action of internal obliques (anterior)
flexion
lateral flexion
rotation to same side
Prime action of quadratus lumborum (lateral)
lateral flexion
Prime action of illiopsoas (anterior)
flexion
Cervical, Thoracic & Lumbar Segments
1. Erector Spinae Group
2. Transversospinalis Group
Prime action of erector spinae group (posterior)
extension
lateral flexion
rotation to same side
Prime action of transversospinalis group
extension
lateral flexion
rotation to opposite side