PECTORALIS MINOR

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PECTORALIS MINOR

O: Anterior surface, ribs 3,4,5
I: Coracoid process of scapula
A: Scapular depression, protraction, anterior tilt
N: Medial pectoral nerve

SERRATUS ANTERIOR

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SERRATUS ANTERIOR

O: Lateral surface of the upper eight ribs
I: Vertebral border of the scapula, anterior surface
A: Scapular protraction & upward rotation
N: Long thoracic nerve

RHOMBOIDS

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RHOMBOIDS

Minor - O: SP of C7 through T1
Major - O: SP of T2 through T5
I: Vertebral border of scapula between the spine and inferior angle
A: Scapular retraction, elevation, & downward rotation
N: Dorsal scapular

LEVATOR SCAPULAE

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LEVATOR SCAPULAE

O: TP of C1 through C4
I: Vertebral border of scapula between the superior angle and spine
A: Scapular elevation & downward rotation
N: Dorsal scapular

LOWER TRAPEZIUS

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LOWER TRAPEZIUS

O: SP of T4 trought T12
I: Base of scapular spine
A: Scapular depression & upward rotation
N: Spinal accessory

MIDDLE TRAPEZIUS

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MIDDLE TRAPEZIUS

O: SP of C7 through T3
I: Scapular spine
A: Scapular retraction
N: Spinal accessory

UPPER TRAPEZIUS

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UPPER TRAPEZIUS

O: Occipital bone, nuchal ligament on cervical SP
I: Outer third of clavicle, acromion process
A: Scapular elevation & upward rotation
N: Spinal accessory