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PECTORAL REGION
upper limb flashcards
| Term | Definition |
|---|---|
| pectoralis major origin | 1- from the anterior surface of clavicle (medial 1/2) 2- front and lateral surfaces of sternum and upper 6 csotal cartilages and the aponeurosis of external oblique muscle |
| pectoralis major insertion | into the bicipital groove - lateral lip |
| pectoralis major innervation | medial and lateral pectoral nerves |
| pectoralis major action | adduction and medial rotation of the humerus |
| pectoralis minor origin | takes an origin from 3-4-5 costochondral junctions |
| pectoralis minor insertion | inserted into the coracoid process - upper surface |
| pectoralis minor innervation | innervated by the medial pectoral nerve - penetrates it |
| pectoralis minor action | depression of the shoulder - protraction of the scapula - accessory inspiratory muscle . |
| subclavius origin | takes an origin from the first rib and its junction |
| subclavius insertion | into the subclavius groove in the clavicle |
| subclavius action | fixation of the clavicle during the movement of shoulder joint |
| subclavius innervation | nerve to subclavius |
| clavipectoral fascia attachment | upwards - it splits to enclose the subclavius and gets attachment to the clavicle downwards - it splits also to enclose the pect. minor and gets attachment to the axillary fascia . |
| the upper part of clavipectoral fascia is called | costocoracoid membrane . |
| clavipectoral fascia is pierced by | 1- cephalic v. 2- thoracoacromial A. 3- Lateral pectoral n. 4- lymph vessels |
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