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Lecture 8
Text figures from:
MD: Moore and Dalley, Clinically Oriented Anatomy 5th Edition
2006 Lippincott Williams and Wilkins
G: Drake, Vogl and Mitchell, Gray's Anatomy for Medical Students
2005 Elsevier
NP: Netter, Atlas of Human Anatomy 5 Edition,
Elsevier, 2011
RM: White, USMLE Road Map Gross Anatomy 2nd Ed.McGraw-Hill
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Collarbone
or Clavicle
Sternoclavicular
joint
Shoulder blade
or scapula
Pectoral girdleNP241
Elsevier 2011. Netter: Atlas of Human
Anatomy, 5e. Plate 179
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Scapular movements
Elevation
Depression
Protraction
(Abduction)Retraction
(Adduction)
Lateral rotationMedial rotation
MD6.3
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MOVEMENTS OF PECTORAL (SHOULDER) GIRDLE ON TRUNK
Action Muscles involved Innervation Major Segments
of innervation
Elevation Levator scapulae Dorsal scapular C4,5
Trapezius, upper part Accessory C1- C5
Rhomboid major and minor Dorsal scapular C5
Depression Pectoralis minor Medial pectoral C7,8
Trapezius, lower part Accessory C1- C5
Latissimus dorsi Thoracodorsal C6,7,8
Pectoralis major, sternocostal part Medial pectoral C6-T1
Protraction Serratus anterior Long thoracic C5,6,7
Pectoralis minor Medial pectoral C7,8
Retraction Rhomboid major and minor Dorsal scapular C5
Trapezius, middle fibers Accessory C1- C5
Lateral rotation Serratus anterior, lower half Long thoracic C5,6,7
of scapula (in abduction) Trapezius, upper and lower parts Accessory C1- C5
Medial rotation Rhomboid major and minor Dorsal scapular C5
of scapula (in adduction) Levator scapulae Dorsal scapular C4,5
Pectoralis minor Medial pectoral C7, 8
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Scapular movements
Elevation
Depression
MD6.3
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MOVEMENTS OF PECTORAL (SHOULDER) GIRDLE ON TRUNK
Action Muscles involved Innervation Major Segments
of innervation
Elevation Levator scapulae Dorsal scapular C4,5
Trapezius, upper part Accessory C1- C5
Rhomboid major and minor Dorsal scapular C5
Depression Pectoralis minor Medial pectoral C7,8
Trapezius, lower part Accessory C1- C5
Latissimus dorsi Thoracodorsal C6,7,8
Pectoralis major, sternocostal part Medial pectoral C6-T1
Protraction Serratus anterior Long thoracic C5,6,7
Pectoralis minor Medial pectoral C7,8
Retraction Rhomboid major and minor Dorsal scapular C5
Trapezius, middle fibers Accessory C1- C5
Lateral rotation Serratus anterior, lower half Long thoracic C5,6,7
of scapula (in abduction) Trapezius, upper and lower parts Accessory C1- C5
Medial rotation Rhomboid major and minor Dorsal scapular C5
of scapula (in adduction) Levator scapulae Dorsal scapular C4,5
Pectoralis minor Medial pectoral C7, 8
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MDSA6.7 NP411
Elsevier 2013. The Netter Collection of Medical Illustrations: The Musculoskeletal
SystemPart I Upper Limb, 2e. Plate 1-9
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Levator scapulae
Rhomboid minor
Rhomboid major
Trapezius(upper fibers)
Scapula
Elevators:NP411
Elsevier 2013. The Netter Collection of Medical Illustrations: The
Musculoskeletal SystemPart I Upper Limb, 2e. Plate 1-9
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MD6.17
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MD6.18
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MOVEMENTS OF PECTORAL (SHOULDER) GIRDLE ON TRUNK
Action Muscles involved Innervation Major Segments
of innervation
Elevation Levator scapulae Dorsal scapular C4,5
Trapezius, upper part Accessory C1- C5
Rhomboid major and minor Dorsal scapular C5
Depression Pectoralis minor Medial pectoral C7,8
Trapezius, lower part Accessory C1- C5
Latissimus dorsi Thoracodorsal C6,7,8
Pectoralis major, sternocostal part Medial pectoral C6-T1
Protraction Serratus anterior Long thoracic C5,6,7
Pectoralis minor Medial pectoral C7,8
Retraction Rhomboid major and minor Dorsal scapular C5
Trapezius, middle fibers Accessory C1- C5
Lateral rotation Serratus anterior, lower half Long thoracic C5,6,7
of scapula (in abduction) Trapezius, upper and lower parts Accessory C1- C5
Medial rotation Rhomboid major and minor Dorsal scapular C5
of scapula (in adduction) Levator scapulae Dorsal scapular C4,5
Pectoralis minor Medial pectoral C7, 8
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Trapezius(inferior fibers)
Scapula
Depressors:
Latissimus
dorsi
NP411
Elsevier 2013. The Netter Collection of Medical Illustrations: The Musculoskeletal
SystemPart I Upper Limb, 2e. Plate 1-9
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MD6.15
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MD6.16
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Pectoralis major
Pectoralis minorNP182
Elsevier 2011. Netter: Atlas of Human Anatomy, 5e. Plate 182