Trapezius Flashcards
1
Q
Origin
A
- external occipital protuberance
- superior nuchal line
- nuchal ligament
- C7 spinous process
- 12 thoracic vertebrae spines
2
Q
Insertion
A
- lateral 1/3 of clavicle
- medial border of acromion
- scapular spine
3
Q
innervation
A
accessory nerve
4
Q
action
A
- elevates scapula
- retracts scapula (middle fibres)
- depresses scapula (lower fibres)
- rotates scapula during abduction of humerus
ERDR
elevates,retracts,depresses,rotates
