 | Term | Definition |
| |
origin of the trapezius |
skull, ligamentum nuchae and spinous processes of C7-T12 vertebrae |
| |
insertion of the trapezius |
lateral 1/3 of clavicle, acromion and spine of scapula |
| |
function of the upper trapezius |
scapular elevation and upward rotation |
| |
function of the middle trapezius |
scapular retraction or adduction |
| |
function of the lower trapezius |
scapular depression and upward rotation |
| |
innervation of the trapezius |
cranial nerve XI/spinal accessory nerve and ventral rami of C3-4 |
| |
origin of the serratus anterior |
ribs 1-8 |
| |
insertion of the serratus anterior |
medial border of anterior scapula |
| |
function of the serratus anterior |
scapular protaction & upward rotation, prevents winging of the scapula |
| |
innervation of the serratus anterior |
long thoracic nerve (C5-7) |
| |
origin of the rhomboid major & minor |
spinous processes of C7-T5 |
| |
insertion of the rhomboid major & minor |
medial border of scapula, from the spine to the inferior angle |
| |
function of the rhomboid major & minor |
scapular retraction, downward (medial) rotation, elevation |
| |
innervation of the rhomboid major & minor |
dorsal scapular nerve (C5) |
| |
origin of the levator scapulae |
transverse process of C1-4 |
| |
insertion of the levator scapulae |
medial border of scapula, superior to the spine |
| |
function of the levator scapulae |
scapular elevation, downward rotation |
| |
innvervation of the levator scapulae |
dorsal scapular nerve (C5) & nerve roots C3-4 |
| |
origin of the pectoralis minor |
ribs 3-5 |
| |
insertion of the pectoralis minor |
coracoid process |
| |
function of the pectoralis minor |
scapular depression, tipping |
| |
innervation of the pectoralis minor |
medial pectoral nerve (C8-T1) |
