Intrinsic Muscles of FL
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Description and Tags
Muscle, origin, insertion, function, innervation
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4 Terms
Supraspinatus
Origin- Supraspinatus fossa and spine of the scapula
Insertion- Greater tubercle of the humerus
Function- Extends and fixes the shoulder
Innervation- Suprascapular n.
Infraspinatus
Origin- Infraspinous fossa and spine of the scapula Infraspinatus m.
Insertion- surface of the humerus
Function- Flexes and abducts the shoulder
Innervation- Suprascapular n.
Subscapularis
Origin- Subscapular fossa
Insertion- Lesser tubercle of the humerus
Function- Adducts the shoulder
Innervation- Subscapular (main part) and axillary n. caudal part
Deltoideus
Origin- Spine and acromion of the scapula
Insertion- Deltoid tuberosity
Function- Flexes the shoulder
Innervation- Axillary n.
Note 
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