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Physical therapy Muscle sets
Superficial and Deep Muscles of the back
18
Anatomy
Graduate
09/12/2007

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Cards

Term
Upper Trapezius
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
Term
Middle Trapezius
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)
Term
Lower trapezius
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.
Term
Latissimus Dorsi
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
Term
Rhomboid Major
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)
Term
Rhomboid Minor
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)
Term
Levator Scapula
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
Term
Splenius capitus
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
Term
Splenius cervicus
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
Term
Iliocostalis cervicis
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
Term
Iliocostalis thoracis
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
Term
Iliocostalis lumborum
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
Term
Longissimus capitus
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
Term
Longissimus cervicis
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
Term
Longissimus thoracis
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:
Term
Spinalis capitis
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
Term
Spinalis cervicis
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
Term
Spinalis thoracis
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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