Muscles Connecting The Upper Limb To The Vertebral Column Assignment Help

MUSCLEORIGININSEDTIONNERVE SUPPLYNERVE ROOTSACTION
TrapeziusOccipital bone, ligamentum nuchae, C7 spine and all thoracic vertebraUpper fibres into lateral third of clavicle, middle & lower into acromion and spine of scapulaSpinal part of accessory nerveXI cranial nerveUpper fibers elevates scapula;middle fibers pulls scapula medially;lower fibers pull medial border of scapula down
Latissimus dorsiIliac crest, lumber facia,spine of lower six thoracic vertebraFloor of bicipital groove of humerusThocacodorsal nerveC6,7,8Extends, adducts, and medially rotates the arm
Levator scapulaeTransverse process of first four cervical vertebraeMedial border of scapulaC3 & 4 and dorsal scapular nerveC3,4,5Raise medial border of scapula
Rhomboid minorLigamentum nuchae & spines of 7th Cervicle & 1st thoracicMedial border of scapulaDorsal scapular nerveC4,5Raise medial border of scapula upward and medially
Rhomboid major2nd to 5th thoracic spinesMedial border of scapulaDorsal scapular nerveC4,5Rais emedial border of scapula upward and medially
DeltoidLateral third of clavicle, acromion,spine of scapulaMiddle of lateral surface of shaft of humerusAxillary nerveC5,6Abducts arm; flex and medially rotates arm; extends & laterally rotates arm
SupraspinatusSupraspinus fossa of scapulaGreater tuberocity of humerusSuprascapular nerveC4,5,6Abducts arm and stabilizes shoulder joint
InfraspinatusInfraspinus fossa of scapulaGreater tuberosity of humerusSuprascapular nerveC4,5,6Laterally rotes arm and stabilizes shoulder joint
Teres majorLower third of lateral border of scapulaMedial lip of bicipital groove of humerusLower subscapular nerveC6,7Medially rotates and adducts arm
Teres majorUpper two thirds of lateral border of scapulaGreater tuberosity of humerusAxillary nerveC4,5,6Laterally rotates arm & stabilizes shoulder
SubscapularisSubscapular fossaLesser tuberosity of humerusUpper & lower subscapular nervesC5,6,7Medially rotates arm & stabilizes shoulder joints

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