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14 Cards in this Set

  • Front
  • Back
-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
-Extension, adduction,medial rotation of arm at shoulder joint
-When arm raised above head, it pulls trunk upward
Latissimus dorsi
-Stabilizes scapula
-Elevation of scapula (MAJOR action)
-Inferior rotation of scapula (minor action)
Levator scapulae
-Stabilizes scapula
-Retraction of scapula (MAJOR action)
-Inferior rotation of scapula (minor action)
Rhomboid Minor & Rhomboid Major
-Elevation of ribs
Serratus Posterior Superior (immediately deep to rhomboid muscles)
-Depression of ribs
Serratus Posterior Inferior
-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
-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)
-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
-ELEVATION of ribs
-LATERAL FLEXION of spine
Levatores costarum (12 pairs)
-Extension of head
Rectus Capitis Posterior Minor
(Rectus minor)
-Extension of head
-Rotation of head to same side of contracting muscle
Rectus Capitis Posterior Major
(Rectus major)
-Extension of head
-Lateral flexion of head to same side of contracting muscle
Obliquus Capitis Superior
(Superior Oblique)
-Rotation of head to same side of contracting muscle
Obliquus Capitis Inferior
(Inferior Oblique)