deltoid muscle
The deltoid muscle (also known as deltoideus muscle) is the largest of the shoulder muscles. The muscle is composed of three heads (clavicular, acromial and spinous), although electromyography suggests that there are at least seven control regions that could act independently .
Summary
- origin: lateral 1/3 of the clavicle, acromion, lateral 2/3 of the scapula spine
- insertion: deltoid tuberosity of the humerus
- innervation: axillary nerve (C5-6)
- arterial supply :
- acromial and deltoid branches of the thoracoacromial artery
- anterior and posterior humeral circumflex arteries
- subscapular artery
- deltoid branch of profunda brachii
- action
- clavicular part (anterior fibers): flexion, internal rotation and abduction of the arm
- acromial part (superior fibers): abduction of the arm
- spinous part (posterior fibers): extension and external rotation of the arm
Siehe auch:
und weiter:
Assoziationen und Differentialdiagnosen zu Musculus deltoideus:
