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14 Cards in this Set
- Front
- Back
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-Stabilizes scapula
-Upper fibers: elevate scapula -Middle fibers: retract scapula -Lower fibers: depress scapula -Together, superior and inferior fibers rotate scapula superiorly (inf. angle moves laterally)—abduction of arm |
Trapezius
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-Extension, adduction,medial rotation of arm at shoulder joint
-When arm raised above head, it pulls trunk upward |
Latissimus dorsi
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-Stabilizes scapula
-Elevation of scapula (MAJOR action) -Inferior rotation of scapula (minor action) |
Levator scapulae
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-Stabilizes scapula
-Retraction of scapula (MAJOR action) -Inferior rotation of scapula (minor action) |
Rhomboid Minor & Rhomboid Major
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-Elevation of ribs
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Serratus Posterior Superior (immediately deep to rhomboid muscles)
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-Depression of ribs
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Serratus Posterior Inferior
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-Bilateral contraction: EXTENSION of head & neck
-Unilateral contraction: LATERAL FLEXION & ROTATION of the head and neck to the same side of the contracting muscle |
Splenius Capitis & Splenius Cervicis
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-Bilateral contraction: Extension of spine
-Unilateral contraction: LATERAL FLEXION of spine to same side of contracting muscle -ECCENTRIC contraction: Also contracts during FLEXION of spine to control movement against gravity |
Erector Spinae (Sacrospinalis)
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-Bilateral contraction: Extension of spine
-Unilateral contraction: LATERAL FLEXION of spine to same side of contracting muscle -CONTRAROTATION: rotation of spine to opposite side -Shorter muscles MAIN FUNCTION to stabilize vertebral column |
TRANSVERSOSPINALIS:
Made of 3 muscles: Semispinalis Multifidus Rotatores |
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-ELEVATION of ribs
-LATERAL FLEXION of spine |
Levatores costarum (12 pairs)
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-Extension of head
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Rectus Capitis Posterior Minor
(Rectus minor) |
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-Extension of head
-Rotation of head to same side of contracting muscle |
Rectus Capitis Posterior Major
(Rectus major) |
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-Extension of head
-Lateral flexion of head to same side of contracting muscle |
Obliquus Capitis Superior
(Superior Oblique) |
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-Rotation of head to same side of contracting muscle
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Obliquus Capitis Inferior
(Inferior Oblique) |
