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Semispinalis Thoracis
- TPs of T6-10
- SPs C6-T4
- EXTENDS, LATERALLY FLEXES and CONTRALATERALLY ROTATES the trunk and neck at the spinal jts
- Dorsal Rami of Spinal Nerves
-
Semispinalis Cervicis
- TPs of T1-5
- SPs oC2-5
EXTENDS, LATERALLY FLEXES and CONTRALATERALLY ROTATES the trunk and neck at the spinal jts - Dorsal Rami of Spinal Nerves
-
Semispinalis Capitis
- TPs of C7-T6 and Articular processes of C4-6
- Occipital bone between Superior and Inferior Nuchal Lines
EXTENDS, LATERALLY FLEXES and CONTRALATERALLY ROTATES the trunk and neck at the spinal jts - Dorsal Rami of Spinal Nerves
-
Multifidus
- Posterior Sacrum, PSIS, Posterior Sacroiliac Ligament and varying parts of L5-C4 Vertebrae
- -Lumbar Region:All mamillary processes
- -Thoracic Reion:All TPs
- -Cervical Region:Articular processes of C4-7
- SPs of Vertebrae 2-4 segmental levels superior to the inferior attachment
- EXTENDS, LATERALLY FLEXES and CONTRALATERALLY ROTATES the trunk and neck at spinal jts
- ANTERIORLY TILTS the pelvis at the lumbosacral jt
Dorsal Rami of Spinal Nerves
-
Rotatores
- TP (inferiorly)
- Lamina (superiorly) of vertebrae 1-2 levels superior
EXTENDS and CONTRALATERALLY ROTATES the trunk and neck at spinal jts - Dorsal Rami of Spinal Nerves
-
Interspinales
- From an SP
- SP directly superior
- EXTENDS the trunk and neck at spinal jts
- Dorsal Rami of Spinal Nerves
-
Intertransversarii
- From a TP
- TP directly superior
- -Cervical Region:7 pairs (Ant and Post) between C1 and T1
- -Thoracic Region:3 between T10 and L1
- -Lumbar Region:4 pairs (Med and Lat) between L1 and L5
LATERALLY FLEXES the trunk and neck at spinal jts - Dorsal and Ventral Rami of Spinal Nerves
-
Levator Costarum
- TPs of C7-T11
- Ribs #1-12 (inferiorly)
- ELEVATES ribs at Sternocostal and Costospinal jts
Dorsal and Ventral Rami of Spinal Nerves
-
Subcostales
- Ribs #10-12 (internal surface near the angle)
- Ribs #8-10 (
internal surface near the angle)- DEPRESSES RIBS #8-10 at sternocostal and costospinal jts
Intercostal Nerves 8-11
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