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Muscle Group 2
Muscles That Move the Shoulder
Question | Answer |
---|---|
Trapezius | Origin: Occipital bone; Thoracic vertebrae Insertion: Clavicle; Scapula (spine & acromion process) Action: Elevates & adducts scapula; Extends neck |
Levator scapulae | Origin: Vertebrae (upper cervical) Insertion: Superior scapula Action: Elevates & adducts scapula at superior angle |
Rhomboid major & minor | Origin: Vertebrae (C7-T5) Insertion: Scapula (medial border) Action: Adducts scapula |
Pectoralis minor | Origin: Ribs (3-5) Insertion: Scapula (coracoid process) Action: Oulls scapula downward & forward (abduct) |
Serratus anterior | Origin: Ribs (upper 8) Insertion: Scapula (anterior vertebral border) Action: Pulls scapula against the chest wall |