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BACK AND SPINE PART 2:
MUSCULAR ANATOMYIAP MUSCULOSKELETALSERIES
Christian Orense, PTRP
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MUSCLES OF THE HUMANBACK
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SUPERFICIAL INTERMEDIATE DEEP
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SUPERFICIAL GROUP
Trapezius,LatissimusDorsiRhomboid Major/Minor
Levator Scapulae
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O:Sup.Nuchal
Line, EOP,
Ligamentum
Nuchae, Spinous
Process C7-T12
I: Lat 1/3 clavicle,
acromion, spine of
scapula
A: Scapular UR/
DRInn: CN XI
Trapezius
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Latissimus DorsiO: Spinous ProcessT7-L5Sacrum, Iliac
CrestI:: Medial crest
Intertuberculargrove
A: Sh.EXADIRINN:Thoracodorsal
nn.
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Levator ScapulaeO: Transverse
Process C1-C4
I:Superior Angle
of Scapula
A: Elevates,
retracts rotates
scapulaINN:Dorsal
Scapular nn
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O: Spinous Process
C6-C7
I:Medial Border of
the ScapulaA: Scapular
retraction,
rotationINN:Dorsal
Scapular nn
Rhomboid Minor
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O: Spinous Process
T1-T4
I:Medial Border of
the Scapula
A: Scapular
retraction,
rotationINN:Dorsal
Scapular nn
Rhomboid Major
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INTERMEDIATE GROUP
SERRATUS POSTERIORSUPERIORSERRATUS POSTERIOR
INFERIORLEVATORES COSTARUM
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SERRATUS POSTERIORSUPERIORO: Lower portion
Ligamentum
Nuchae, SpinousProcess C7-T3,
Supraspinous
Ligaments
I:Upper portion
ribs 2-5A:Elevates ribs 2-5INN:Anterior Rami
Upper Thoracic nn
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SERRATUS POSTERIORINFERIORO: Spinous Process
T11-L3,
SupraspinousLigaments
I:Upper portionribs 2-5A:Elevates ribs 2-5
INN:Anterior Rami
Upper Thoracic nn
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LEVATORES COSTARUMO: Spinous Process
T11-L3,
SupraspinousLigaments
I:Upper portionribs 2-5A:Elevates ribs 2-5
INN:Anterior Rami
Upper Thoracic nn
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DEEP MUSCLE GROUPSUPERFICIALLY VERTICALLY RUNNING:
ERECTORSPINAE
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O: Iliac crest,
sacrum, lower
thoracicvertebrae, angle of
upper 6 ribsI: Angles of the
lower 6 ribs,Transverse
process C4-C7A: TrunkExtension (B),
Lateral flexion(unilateral)INN:Dorsal Rami
ILIOCOSTALIS
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LONGISSIMUSO: Lower cervical,
upper and lower
cervical vertebraeI: Mastoid
process, Ribs,
Upper cervical,
upper lumbar
vertebraeA: Extends the
head, neck,vertebral columnINN:Dorsal Rami
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O: C6-C7, T11-L2
I: C2-C3, Middle
thoracic
vertebraeA: Extends neck
and vertebral
columnINN:Dorsal Rami
SPINALES
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DEEP (INTERMEDIATE)
MUSCLE GROUPOBLIQUE RUNNING: TRANSVERSOSPINALES GROUP
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O: Transverse
process TVI- T10I: Spinous process
of upper 4
thoracic and
lower 2 cervicalvertebraeA: Extends neck
and vertebral
columnINN:Dorsal Rami
SEMISPINALES
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O: Transverse
process I: Spinous process
of superior
vertebraeA: Extends &
rotates vertebral
columnINN:Dorsal Rami
MULTIFIDUS
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O: Transverse
process I: Base of Spinous
process of
superiorvertebraeA: Extends &
rotates vertebral
columnINN:Dorsal Rami
ROTATORES
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DEEPEST MUSCLE GROUP
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O: Transverse
process belowI: Transverse
process of
vertebra aboveA: Extends
vertebral column
INN:Dorsal Rami
INTERTRANSVERSARII
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O: Spinous Process
of vertebra belowI: Spinous process
of vertebra above
A: Extends
vertebral column
INN:Dorsal Rami
INTERSPINALES
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END OF LECTUREPLEASE PREPARE FOR POSTLEC QUIZ
