Movers of the neck and shoulder


Question Answer
what is the origin of latissimus dorsi? spinous processes of last 6 thoracic vertebrae, last 3 or 4 ribs, thoracolumbar aponeurosis and post. iliac crest
what is the insertion of latissmus dorsi? crest of the lesser tubercle of the humerus
what are the actions of latissimus dorsi? -extend the shoulder-adduct the shoulder-medially rotate the shoulder
what is the origin of levator scapula? transverse processes of c1-c4
what is the insertion of levator scapula? upper region of the medial border and superior angle of the scapula
what are the acitons of levator scapula? *Bi* extend the head and the neck*Uni* elevate the scapula downwardly rotate the scapula lat. flex the head and neck rotate the head and neck to the same side
what is the origin of trapezius? external occipital protuberance, medial portion of superior nuchal line of the occiput, ligamnetum nuchae and spinous processes of c7-t12
where does trapezius insert? lat. 1/3 of clavicle, acromion, and spine of the scapula
what are the actions of the upper traps? *bi* extend the head and neck*uni* lat, flex the head and neck to the same side, rotate the head and neck to the oppposite side
what are the actions of the mid traps? adduct the scapulastabilize scapula
what are the actions of the lower traps? depress scapulaupwardly rotate scapula
what is the origin of rhomboid major? spinous processes of t2-t5
where does rhomboid major insert? medial border of the scapula between the spine and the inferior angle
what are the actions of rhomboid major and minor? adduct, elevate, and downwardly rotate the scapula
what is the origin of rhomboid minor? spinous processes of c7-t1
where does rhomboid minor insert? upper portion of medial border of the scapula, across from the spine
what is the origin of pec. major? medial half of the clavicle, sternum and cartialge of the 1st-6th ribs
where does pec. major insert? crest of the greater tubercle of the humerus
what are the actions of pec. major? adduct and medially rotate the shoulderassist in elevating the thorax
what are the actions of pec. major? flex and horizontally adduct the shoulderexend the shoulder
what is the origin of the deltoid? lat. 1/3 of the clavicle, accromion and spine of the scapula
where does the deltoid insert? deltoid tuberosity
what are the actions of the deltoid? abduct, flex, medially rotate, lat. rotate, extend, and horizontally adduct the shoulder



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