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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