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Pectoral Girdle Muscles

Pectoral Girdle Muscles. Trapezius - Shape: large, triangular muscle of the upper back Location: extends horizontally from the skull base & the cervical/ thoracic vertebrae to the shoulder Action: rotate the scapula & can pull the head backward. Muscles of the Shoulder. Figure 7-17(a).

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Pectoral Girdle Muscles

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  1. Pectoral Girdle Muscles • Trapezius- • Shape: large, triangular muscle of the upper back • Location: extends horizontally from the skull base & the cervical/ thoracic vertebrae to the shoulder • Action: rotate the scapula & can pull the head backward

  2. Muscles of the Shoulder Figure 7-17(a)

  3. Dumbbell Shoulder Shrugs

  4. Dumbbell Shoulder Shrugs

  5. Pectoral Girdle Muscles • Rhomboid Major/Minor- connect vertebral column to the scapula; retracts & elevates the scapula & can rotate the scapula downward

  6. Prone Bench Shrug

  7. Pectoral Girdle Muscles • Levator Scapulae: • Shape: straplike muscle • Location: runs vertically through the neck; connecting cervical vertebrae to the scapula • Action: elevating the scapula

  8. Pectoral Girdle Muscles • Serratus Anterior: • Shape: broad curved muscle; narrow strips • Location: side of the chest; extends along the ribs to the scapula • Action: pulls the scapula downward; used when pushing something

  9. Pectoral Girdle Muscles • Pectoralis Minor: • Shape: thin, flat muscle • Location: extends laterally & upward from the ribs to the scapula • Action: pulls the scapula forward/ downward & raises ribs during inhalation

  10. Muscles of the Shoulder Figure 7-17(b)

  11. Pectoral Girdle Muscles

  12. Pectoral Girdle Muscles

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