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26 Cards in this Set

  • Front
  • Back
Innervates the trapezius
accessory nerve XI
Innervates Deltoid
axillary nerve [C5,C6]
Innervates Levator scapulae
C3, C4
Dorsal scapular nerve [C4, C5]
Rhomboids' Innervations
Dorsal scapular nerve [C4, C5]
Function of trapezius
-elevates scapula to abduct humerus above horizontal
-middle fibers retract scapula
-lower fibers depress scapula
Function of deltoids
Major abductor of arm (after initial 15 degrees by supraspinatus)
-assist in flexion and extension of arm
Levator scapulae functions
elevate scapula
Rhomboids
elevates and retracts the scapula
Attachments of the Trapezius
origin: Superial nuchal line, occipital protuberance, ligamentum nuchae, CVII to TXII spinous process
insertion: spine of scapula, acromion, lateral 1/3 of clavicle
Attachments of deltoids
origin: spine of scapula, acromion, lateral 1/3 of clavicle
insertion: deltoid tuberosity
Attachments of levator scapulae
origin: CI to CIV transverse processes
insertion: Superior angle to the root of spine of the scapula (upper medial border)
Rhomboid minor's attachments
origin: lower ligamentum nuchae, CVII and TI spinous processes
insertion: medial border (@ root of spine of scapula)
Rhomboid major's attachments
origin: TII-TV spinous processes
insertion: from root of the spine of scapula to the inferior angle (@ the medial border of scapula)
Innervates Supraspinatus and Infraspinatus
Suprascapular nerve [C5,C6]
Innervates Teres minor
Axillary nerve [C5,C6]
Innervates Teres major
Inferior subscapular nerve [C5-C7]
Long head of Triceps Brachii innervation
Radial Nerve [C6-C8]
Supraspinatus function
initial 15 degree of abduction
Infraspinatous and Teres minor function
lateral rotation of arm
Function of Teres major
Medial rotation and extension of the arm
Long head of triceps brachii
extension of the forearm, aids adduction and extension of the arm
Supraspinatus attachments
origin: medial 2/3 of supraspinous fossa of scapula
Infraspinatus attachments
origin: medial 2/3 of infraspinous fossa of scapula
insertion: posterior of greater tubercle of humerus
Teres minor attachments
origin: superior to inferior angle on posterior of scapula
insertion: posterior of greater tubercle of humerus
Teres major attachements
origin: posterior of inferior angle of the scapula
insertion: intertubercular sulcus (anterior surface)
Long head of triceps brachii attachments
origin: infraglenoid tubercle on scapula
insertion: olecranon process of ulna