Shoulder Girdle Mm Flashcards
Trapezius middle fibers
O: & I:
O: C7 – T3 spinous processes
I: scapular spine
Trapezius lower fibers
O: & I:
O: Thoracic spinous processes (middle and lower)
I: proximal scapular spine
Levator scapula
O: & I:
O: C1 – C4 transverse processes
I: medial border between superior angle and spine
Rhomboids
O: & I:
O: C7-T5 spinous processes
I: medial border between spine and inferior angle
Serratus anterior
O: & I:
O: lateral surface of upper eight ribs
I: anterior surface of medial border
Pectoralis minor
O: & I:
O: ribs 3–5
I: coracoid process
Trapezius upper fibers
N: & A:
N: spinal accessory CN 11
A: elevation and upward rotation
Trapezius middle fibers
N: & A:
N: spinal accessory CN 11
A: retraction
Trapezius lower fibers
N: & A:
N: spinal accessory CN 11
A: depression and upward rotation
Levator scapula
N: & A:
N: dorsal scapular C5
A: elevation and downward rotation
Rhomboids
N: & A:
N: dorsal scapular C5
A: retraction, elevation, downward rotation
Serratus anterior
N: & A:
N: Long thoracic C5 – C7
A: protraction and upward rotation
Pectoralis minor
N: & A:
N: medial pectoral
A: depression, protraction, downward rotation, and tilt
Trapezius upper fibers
O: & I:
O:occipital bone and cervical spinous processes
I: lateral 1/3 clavicle and acromion process