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Upper Limb
orgin, insertion, action of muscles of the superior limb per FCNH
| Question | Answer |
|---|---|
| Rhomboideus Major | O: Spinous process of thoracic vertebrae 2-5. I: medial border of the scapula A: retraction + downward rotation |
| Rhomboideus Minor | O: lower nuchal ligament, spinous processes od C7 + T1 I: medial bordewr of scapula between the spine and superior angle A: retraction + downward rotation |
| Levator Scapulae | O: tranverse processes of C1- C4 I: superior angle & upper medial margin of scapula A: elevation & lateral flexion of neck |
| Trapezius | O: occipital bone, nuchal ligament, spinous processes of C7 & T1- T12 I: clavicle, acromion process, scapular spine A: upward rotation of scapula, elevation, retraction, extension of the head |
| Serratus Anterior | O: outer surface of first 8-9 ribs I: medial margin of the scapula A: protraction & upward rotation |
| Pectoralis Minor | O: ribs 3,4,5 I: coracoid process A: PROTRACTION, downward rotation, aids in breathing |
| Subclavius | O: First rib I: Clavicle A: downward rotation of clavicle |
| Supraspinatus | O: supraspinous fossa I: greater tubericle A: ABduction of the sholder, stabilization of sholder joint |
| Infraspinatus | O: Infraspinous fossa I: greater tubericle A: lateral rotation, stabilization of sholder joint |
| Teres Minor | O: Dorsal/ Lateral scapula I: greater tubricle A: lateral rotation, stabilization of scapula |
| Subscapularis | O: Subscapular fossa I:lesser tubricle A: medial rotation, stabilization of scapula |
| Pectoralis Major | O: Clavicle, Sternum, Costal cartilages 1-7, aponeurosis of the external oblique I: Intertubericular groove A: Flexes, adduction, Medial Rotation |
| Latissimus Dorsi | O: Spinous processes of the lower thoracic vertebra, thoracolumbar fascia, iliac crest, ribs 10-12 I: intertubericular groove A: Extendion, adduction, medial rotation |
| Teres Major | O: Dorsal/ Inferior angle of scapula I: Intertubericular groove A: Adduction, medial rotation, extension |
| Deltoid | O: Clavicle, Acromion process, Spine of Scapula I: Deltoid tuberosity A: ABduction, flexion, medial rotation, extension, lateral rotation |