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superback

Superficial back muscles- origin, insertion, action, innervation

QuestionAnswer
Origin of upper trapezius m external occipital protuberance
Insertion of upper trapezius m lateral clavicle, acromion process
Action of upper trapezius m elevation, upward rotation of scapula
Innervation of upper trapezius m spinal accessory n (motor), C3-C4 (sensory)
Origin of middle trapezius m T1-5
Insertion of middle trapezius m spine of scapula
Action of middle trapezius m retraction of scapula
Innervation of middle trapezius m spinal accessory n (motor), C3-C4 (sensory)
Origin of lower trapezius m T6-12
Insertion of lower trapezius m root of spine of scapula
Action of lower trapezius m depression of scapula
Innervation of lower trapezius m spinal accessory n (motor), C3-C4 (sensory)
Origin of latissimus dorsi m vertebrae, ilium, lumbodorsal fascia
Insertion of latissimus dorsi m intertubercular groove of humerus
Action of latissimus dorsi m extends, adducts upper arm
Innervation of latissimus dorsi m thoracodorsal n
Origin of rhomboid major m T1- T4
Insertion of rhomboid major m medial border of scapula
Action of rhomboid major m retracts, rotates, fixes scapula
Innervation of rhomboid major m dorsal scapular n
Origin of rhomboid minor m C6-C7
Insertion of rhomboid minor m medial border of scapula
Action of rhomboid minor m retracts, rotates, fixes scapula
Innervation of rhomboid minor m dorsal scapular n
Origin of Teres major lower, axillary border of scapula
Insertion of teres major m upper, anterior surface of humerus
Action of teres major m assists in extension, adduction, medial rotation of arm
Innervation of teres major m lower subscapular n
Name the rotator cuff muscles SITS: supraspinatus m, infraspinatus m, teres minor m, subscapularis m
Origin of supraspinatus m supraspinous fossa of scapula
Insertion of supraspinatus m greater tubercle of humerus
Action of supraspinatus m assists in abducting arm
Insertion of supraspinatus m suprascapular n
Origin of infraspinatus m infraspinatus border of scapula
Insertion of infraspinatus m greater tubercle of humerus
Action of infraspinatus m lateral rotation of arm
Innervation of infraspinatus m suprascapular n
Origin of teres minor m axillary border of scapula
Insertion of teres minor m greater tubercle of humerus
Action of teres minor m laterally rotate arm
Innervation of teres minor m axillary n
Origin of subscapularis m subscapular fossa on scapula
Insertion of subscapularis m lesser tubercle of humerus
Action of subscapularis m medial rotation
Innervation of subscapularis m suprascapular n
Created by: chiro0912 on 2009-09-10



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