Term
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Definition
Origin (PA) med 1/3 superior. nuchal line, ext. occipital protuberance, lig nuchae, SP C7
Insertion (DA) post border lat 1/3 clavicle
Innervention- Motor: Spinal part of the accessory n. (CN 11) motor innervation Sensory: Branches from ventral rami (C3,4)
Blood Supply- Superficial branch of the transverse cervical artery
Actions- Open Chain(OC)- Upper: scapular elevation (upward slide and upward rotation)
Closed Chain- Unilaterally: ipsilateral SB, contralateral. Rot head and neck Bilaterally: extends neck and head |
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Term
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Definition
PA- SP T1-T6 and supraspinous Ligs.
DA- Medial boarder of the Acromion, Superior lip of the spine of scapula
Innervention- Motor: Spinal part of the accessory n. (CN 11) motor innervation Sensory: Branches from ventral rami (C3,4)
Blood Supply- Superficial branch of the transverse cervical artery
Action-
Scapula Retraction ( medial slide and external rotation) |
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Term
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Definition
PA- SP T7-T12 supraspinous ligs.
DA- Triangular area medial to the base of the spine of scapula.
Innervention- Motor: Spinal part of the accessory n. (CN 11) motor innervation Sensory: Branches from ventral rami (C3,4)
Blood Supply- Superficial branch of the transverse cervical artery
Action- Upward rotation and Downward slide of the scapula. |
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Term
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Definition
PA- T7-12 SP, lumbar SP, median sacral crest, supraspinous ligs, and post iliac crest via the post layer thoracolumbar fascia, outer lip of post iliac crest lat to erector spinae, muscular slips to ribs 9-12
DA- Floor of bicipital (intertubercular) groove
Innervention- Thoracodorsal nerve (C6,7,8)
Blood Supply- horacodorsal artery
Actions- OC- adducts, extends, & medial rot. humerus, assists with scapular depression (downward rotation & inferior slide)
CC- trunk elevation |
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Term
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Definition
PA- SP T2- T5
DA- Medial boarder of the scapula between the root of the spine and the inferior boarder.
Innervention- Dorsal Scapular Nerve C4,C5
Blood Supply- Dorsal Scapular Artery and Deep branch of the transverse Cervical Artery.
Action- Scapular Retraction and Downward rotation
(assists with upper slide) |
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Term
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Definition
Pa- SP C7-T1 lower lig. Nuchae
DA- Medial boarder of the scapula at the level of the root of the spine.
Innervation- Dorsal Scapular Nerve C4,C5
Blood Supply- Dorsal Scapular Artery and the Deep branch of the transverse cervical artery.
Action- Scapular retraction and downward rotation
(assists with the upper slide) |
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Term
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Definition
PA- TP C1-C4 post tubercles C3,4
DA- Medial boarder of the scapula between the superior angle and the root of the spine.
Innervation- Dorsal scapular nerve (C5) & branch of (C3,4) spinal nerves
Blood supply- Deep branch of the transverse cervical artery or the dorsal scapular artery
Actions Upward slide, Medial rotation of scapula
CC Ipsilateral SB and neck rotation |
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Term
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Definition
PA Lower ½ lig nuchae, SP C7-T3(4) & their supraspinous ligs
DA- Mastoid process & rough surface below lat 1/3 of sup nuchal line
I- Lateral branches of dorsal rami of middle cervical spinal nerves
Blood supply-
Br. off the external carotid
Actions
Unilaterally: ipsilateral rot. & SB neck Bilaterally: extends the neck |
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Term
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Definition
PA-SP T3-6
DA-Posterior tubercles of the TP C1-2(3) (anterior to the attachment of levator scapulae)
Innervation-
Lateral branches of dorsal rami of lower cervical spinal nerves
Blood Supply-
Br. off the external carotid
Actions
Unilaterally: ipsilateral rot. & SB neck Bilaterally: extends |
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Term
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Definition
PA- Ribs 3-6 at angles
DA- C4-6 TP on post tubercles
I-
Dorsal rami of lower cervical spinal nerves
Blood supply-
Post. branches of post intercostal arteries
Action
Unilaterally: ipsilateral. SB the spine Bilaterally: extends the spine |
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Term
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Definition
PA-Lower 6 ribs at the angles
DA- Upper 6 ribs at the angles, posterior portion of the C7 TP
I-
Dorsal rami of thoracic spinal nerves
Blood- Post. branches of post intercostal arteries
Action
Unilaterally: ipsilateral. SB the spine Bilaterally: extends the spine |
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Term
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Definition
PA- common tendon (median sacral crest, SP T11, 12 and L1-5 and their supraspinous ligaments and medial aspect of the posterior iliac crest
DA-lower 6-7 ribs at the angles
I- Dorsal rami of lumbar spinal nerves
Blood Supply- Post. branches of post intercostal arteries
Actions
Unilaterally: ipsilateral. SB the spine Bilaterally: extends the spine |
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Term
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Definition
PA-TP’s of T1-4(5) & articular processes C(4)5-7
DA-
mastoid process at post margin
I- Dorsal rami of lower cervical spinal nerves
Blood
Muscular branches of the occipital artery, Post. branches of post intercostal arteries
Actions
Unilaterally: ipsilateral. Rot of the head Bilaterally: extends the head |
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Term
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Definition
PA- TP’s of T1-4(5)
DA-TP’s of C2-6 at post tubercles
I- Dorsal rami of cervical and thoracic spinal nerves
Blood- Post. branches of post intercostal arteries
Actions
Unilaterally: ipsilateral. SB of the head Bilaterally: extends the spine |
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Term
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Definition
PA- In the lumbar region via a common tendon, (posterior aspect of the lumbar TP’s, middle layer of the thoracolumbar fascia), tips of the TP of all thoracic vertebrae and lower 9 to 10 ribs between their tubercles and angles
DA-
Tips of T1-12 TP’s & lower 9-10 ribs between the tubercles & angles
I- Dorsal rami of thoracic and lumbar spinal nerves
Blood- Post. branches of post intercostal arteries
Actions- Unilaterally: ipsilateral SB of the head Bilaterally: |
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Term
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Definition
PA- Blends with semispinalis capitis
I- Dorsal rami of lower cervical spinal nerves
Blood- Post. branches of post intercostal arteries
Action- Extends the spine |
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Term
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Definition
PA- Lower lig nuchae, SP C7
DA- SP C2
I- Dorsal rami of cervical and thoracic spinal nerves
Blood- Post. branches of post intercostal arteries
Action- Extends the spine |
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Term
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Definition
PA- SP’s of T11-L2
DA- SP’s of T1-4
I- Dorsal rami of thoracic and lumbar spinal nerves
Blood- Post. branches of post intercostal arteries
Action- Extends the spine |
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