superficial muscles of back + shoulders Flashcards
what three muscles make up the superficial muscles of back and shoulder
deltoid, trapezius, latissimus dorsi
where does the deltoid originate
acromial end of clavicle, acromion process + spine of scapula
where does the deltoid insert
deltoid tuberocity of humerus
what movement(s) does the deltoid perform
shoulder ABduction, flexion, extension, medial + lateral rotation
what nerve supplies the deltoid
axillary nerve
where does the trapezius originate
occipital bone of skull, cervicle and thoracic vertabrae
where does the trapezius insert
acromial end of clavicle, acromion and spine of scapula
what movement(s) does the trapezius perform
elevates, depresses, and retracts scapula
what nerve supplies the trapezius
accessory nerve
where does the latissimus dorsi originate
thoracic + lumbar vertebrae, iliac crest of ilium
where does the latissimus dorsi insert
intertubercular groove of humerus
what movement(s) does the latissimus dorsi perform
medial shoulder rotation, extension, ADduction
what nerve supplies the latissimus dorsi
thorocodorsal
