Term
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Definition
Proximal Attachment:
external occipital protuberance, nuchal ligament
Distal Attachment:
posterior-superior aspect of the lateral one third of the clavicle
Innervation:
spinal accessory nerve
Actions:
scapula elevation, scapula upward rotation |
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Term
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Definition
Proximal Attachment:
nuchal ligament, spinous processes of C7-T5
Distal Attachment:
medial aspect of the acromion
Innervation:
spinal accessory nerve
Actions:
scapula retraction
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Term
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Definition
Proximal Attachment:
spinous processes of T6-T12
Distal Attachment:
upper lip of the spine of the scapula near the medial border
Innervation:
spinal accessory nerve
Actions:
scapula depression, scapula upward rotation, scapula retraction
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Term
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Definition
Proximal Attachment:
transverse processes of C1-C4
Distal Attachment:
medial border of scapula between the superior angle & root of scapula spine
Innervation:
dorsal scapular nerve
Actions:
scapula elevation, scapula downward rotation
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Term
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Definition
Proximal Attachment:
nuchal ligament and spinous processes of C7-T5
Distal Attachment:
medial border of scapula from root of scapula spine to inf. angle of scapula
Innervation:
dorsal scapular nerve
Actions:
scapula retraction, scapula elevation, scapula downward rotation
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Term
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Definition
Proximal Attachment:
external surface of the lateral region of the first nine ribs
Distal Attachment:
entire medial border of the scapula
Innervation:
long thoracic nerve
Actions:
scapula protraction, scapula upward rotation, holds scapula against posterior thorax
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Term
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Definition
Proximal Attachment:
anterior surface of ribs 3-5
Distal Attachment:
coracoid process of the scapula
Innervation:
medial pectoral nerve
Actions:
scapula depression, scapula downward rotation, scapula anterior tilt
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Term
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Definition
Proximal Attachment:
near the cartilage of the first rib
Distal Attachment:
inferior surface of the clavicle
Innervation:
branch from the upper trunk of the brachial plexus (C5-C6)
Actions:
clavicle depression
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Term
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Definition
Proximal Attachment:
supraspinatus fossa
Distal Attachment:
greater tubercle of the humerus
Innervation:
suprascapular nerve
Actions:
shoulder abduction, stabilization of GH joint
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Term
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Definition
Proximal Attachment:
infraspinatus fossa
Distal Attachment:
greater tubercle of the humerus
Innervation:
suprascapular nerve
Actions:
shoulder external rotation, stabilization of GH joint
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Term
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Definition
Proximal Attachment:
posterior surface of the lateral border of the scapula, near inferior angle
Distal Attachment:
greater tubercle of the humerus
Innervation:
axillary nerve
Actions:
shoulder external rotation, stabilization of GH joint
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Term
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Definition
Proximal Attachment:
subscapular fossa
Distal Attachment:
lesser tubercle of the humerus
Innervation:
upper and lower subscapular nerve
Actions:
shoulder internal rotation, stabilization of GH joint
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Term
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Definition
Proximal Attachment:
thoracolumbar fascia, spinous processes of lower thoracic and all of the lumbar vertebrae, posterior crest of the ilium, the lower four ribs, and inferior angle of the scapula
Distal Attachment:
floor of the intertubercular groove of the humerus
Innervation:
thoracodorsal nerve
Actions:
shoulder add., extension, and internal rotation, scapula depression
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Term
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Definition
Proximal Attachment:
inferior angle of the scapula
Distal Attachment:
crest of the lesser tubercle of the humerus
Innervation:
lower subscapular nerve
Actions:
shoulder adduction, shoulder extension, shoulder internal rotation
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Term
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Definition
Proximal Attachment:
long head - supraglenoid tubercle of glenoid fossa
short head - coracoid process of scapula
Distal Attachment:
bicipital tuberosity of radius
Innervation:
musculocutaneous nerve
Actions:
shoulder flexion, elbow flexion, forearm supination
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Term
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Definition
Proximal Attachment:
coracoid process of scapula
Distal Attachment:
medial aspect of proximal shaft of humerus
Innervation:
musculoskeletal nerve
Actions:
shoulder flexion
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Term
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Definition
Proximal Attachment:
infraglenoid tubercle of scapula
Distal Attachment:
olecranon process of ulna
Innervation:
radial nerve
Actions:
shoulder extension, elbow extension
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Term
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Definition
Proximal Attachment:
anterior surface of lateral aspect of clavicle
Distal Attachment:
deltoid tuberosity of humerus
Innervation:
axillary nerve
Actions:
shoulder flexion, shoulder horizontal adduction, shoulder internal rotation, shoulder abduction
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Term
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Definition
Proximal Attachment:
superior-lateral surface of acromion
Distal Attachment:
deltoid tuberosity of humerus
Innervation:
axillary nerve
Actions:
shoulder abduction, shoulder flexion
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Term
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Definition
Proximal Attachment:
spine of scapula
Distal Attachment:
deltoid tuberosity of humerus
Innervation:
axillary nerve
Actions:
shoulder extension, shoulder horizontal abduction, shoulder external rotation
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Term
Pectoralis Major
(Clavicular head) |
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Definition
Proximal Attachment:
anterior margin of medial portion of clavicle
Distal Attachment:
crest of greater tubercle of humerus
Innervation:
lateral pectoral nerve
Actions:
shoulder internal rotation, flexion, and horizontal adduction
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Term
Pectoralis Major
(Sternal Head) |
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Definition
Proximal Attachment:
lateral margin of manubrium and body of sternum and cartilages of the first six to seven ribs
Distal Attachment:
crest of greater tubercle of humerus
Innervation:
lateral and medial pectoral nerve
Actions:
shoulder internal rotation, adduction and extension, depression
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