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Deep Back: Erector/Sacrospine group
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Iliocostalis cervicis PA (Origin)
Ribs 3‐6 at angles
Iliocostalis cervicis DA (Insertion)
C4‐6 TP on post tubercles
Iliocostalis cervicis innervation
Posterior rami of lower cervical spinal nerves
Iliocostalis cervicis blood supply
Post. branches of post intercostal arteries
Iliocostalis cervicis actions
Unilaterally
: ipsilateral. SB the spine
Bilaterally
: extends the spine
Iliocostalis thoracis PA (Origin)
Lower 6 ribs at the angles
Iliocostalis thoracis DA (Insertion)
Upper 6 ribs at the angles, posterior portion of the C7 TP
Iliocostalis thoracis innervation
Posterior rami of thoracic spinal nerves
Iliocostalis thoracis blood supply
Post. branches of post intercostal arteries
Iliocostalis thoracis actions
Unilaterally
: ipsilateral. SB the spine
Bilaterally
: extends the spine
Iliocostalis lumborum PA (Origin)
common tendon (median sacral crest, SP T11, 12 and L1‐5 and their supraspinous ligaments and medial aspect of the posterior iliac crest
Iliocostalis lumborum DA (Insertion)
lower 6‐7 ribs at the angles
Iliocostalis lumborum innervation
Posterior rami of lumbar spinal nerves
Iliocostalis lumborum blood supply
Post. branches of post intercostal arteries
Iliocostalis lumborum actions
Unilaterally
: ipsilateral. SB the spine
Bilaterally
: extends the spine
Longissimus capitus PA (Origin)
TP’s of T1‐4(5) & articular processes C(4)5‐7
Longissimus capitus DA (Insertion)
mastoid process at post margin
Longissimus capitus innervation
Posterior rami of lower cervical spinal nerves
Longissimus capitus blood supply
Muscular branches of the occipital artery, Post. branches of post intercostal a.
Longissimus capitus actions
Unilaterally
: ipsilateral. Rot of the head
Bilaterally
: extends the head
Longissimus cervicis PA (Origin)
TP’s of T1‐4(5)
Longissimus cervicis DA (Insertion)
TP’s of C2‐6 at post tubercles
Longissimus cervicis innervation
Posterior rami of cervical and thoracic spinal nerves
Longissimus cervicis blood supply
Post. branches of post intercostal arteries
Longissimus cervicis actions
Unilaterally
: ipsilateral. SB of the head
Bilaterally
: extends the spine
Longissimus thoracis PA (Origin)
In the lumbar region via a common tendon, (post. aspect of the lumbar TP’s, middle layer of the thoracolumbar fascia)
Longissimus thoracis DA (Insertion)
Tips of T1‐12 TP’s & lower 9‐10 ribs between the tubercles & angles
Longissimus thoracis innervation
Posterior rami of thoracic and lumbar spinal nerves
Longissimus thoracis blood supply
Post. branches of post intercostal arteries
Longissimus thoracis actions
Unilaterally
: ipsilateral SB of the head
Bilaterally
: extends the spine
Spinalis capitis PA (Origin)
Blends with semispinalis capitis
Spinalis capitis DA (Insertion)
Blends with semispinalis capitis
Spinalis capitis innervation
Posterior rami of lower cervical spinal nerves
Spinalis capitis blood supply
Post. branches of post intercostal arteries
Spinalis capitis actions
Extends the spine
Spinalis cervicis PA (Origin)
Lower lig nuchae, SP C7
Spinalis cervicis DA (Insertion)
SP C2
Spinalis cervicis innervation
Posterior rami of cerv. & thoracic spinal n
Spinalis cervicis blood supply
Post. branches of post intercostal a.
Spinalis cervicis actions
Extends the spine
Spinalis thoracis PA (Origin)
SP’s of T11‐L2
Spinalis thoracis DA (Insertion)
SP’s of T1‐4
Spinalis thoracis innervation
Posterior rami of thoracic and lumbar spinal nerves
Spinalis thoracis blood supply
Post. branches of post intercostal arteries
Spinalis thoracis actions
Extends the spine
Author
paffman7
ID
31727
Card Set
Deep Back: Erector/Sacrospine group
Description
ERECTOR SPINAE/SACROSPINALIS GROUP
Updated
2010-08-29T20:46:40Z
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