Shoulder Origin/Insertion

Question 1

Trapezius

Answer 1

O:

1) Medial part of superior nuchal line
2) Ligamentum nuchae
3) Thoracic spinous processes
4) Supraspinous ligament

I:

1) Lateral part of the clavicle
2) Acromion
3) Spine of the scapula

Question 2

Latissimus Dorsi

Answer 2

O:

1) Spinous processes of T7-T12
2) Lumbar aponeurosis (thoracolumbar fascia)
3) Crest of ilium
4) Lower 3 or 4 ribs
5) Inferior angle of scapula

I:
Floor of bicipital groove of humerus

Question 3

Levator scapulae

Answer 3

O:
Transverse processes of C1-C4

I:
Vertebral border between the spine and the superior angle of scapula

Question 4

Rhomboid Minor

Answer 4

O:
Spinous processes of C7 and T1

I:
Vertebral border of scapula at base of spine

Question 5

Rhomboid Major

Answer 5

O:
Spinous processes T2-T5

I:
Vertebral border of scapula below rhomboid minor to the inferior angle

Question 6

Serratus posterior superior

Answer 6

O:
Spinous processes of C7-T2

I:
Upper ribs

Question 7

Serratus posterior inferior

Answer 7

O:
Spinous processes of T11-L2

I: Lower rirbs

Question 8

Serratus anterior

Answer 8

O:
Digitations from ribs 1-8

I:

1) Vertebral border on costal surface of scapula
2) Inferior angle of scapula

Question 9

Deltoid

Answer 9

O:

1) Lower margin of scapular spine
2) Acromion
3) Lower margin of lateral 1/3 of clavicle

I:
Deltoid tuberosity of humerus

Question 10

Subscapularis

Answer 10

O:
Costal surface of scapula (subscapular fossa)

I:
Lesser tubercle of humerus

Question 11

Supraspinatus

Answer 11

O:
Supraspinous fossa

I:
Superior facet of greater tubercle of humerus

Question 12

Infraspinatus

Answer 12

O:
Infraspinous fossa

I:
Middle facet of greater tubercle

Question 13

Teres minor

Answer 13

O:
Lateral border of scapula, above teres major

I:
Lower facet of greater tubercle

Question 14

Teres major

Answer 14

O:
Lower lateral border of scapula, as far as inferior angle

I:
Medial lip of bicipital groove

Question 15

Coracobrachialis

Answer 15

O:
Coracoid process

I:
Middle shaft of humerus

Question 16

Biceps Brachii

Answer 16

O:

1) Short head: coracoid process
2) Long head: supraglenoid tubercle (blends with labrum, see notes)

I:
Radial tuberosity

Question 17

Triceps Brachii

Answer 17

O:

1) Long head : infraglenoid tubercle
2) Lateral head: posterior humerus above the spiral groove
3) Medial head: posterior humerus below the spiral groove (deep)

I:
Olecranon process

Question 18

Pectoralis Major

Answer 18

O:

1) Clavicular head: medial 1/3 of clavicle
2) Sternal head: sternum, upper 6 costal cartilages
3) Aponeurosis of external oblique

I:
Lateral lip of bicipital (intertubercular) groove of humerus
1) Clavicular fibers: insert to lower part of groove
2) Sternal fibers insert in higher part of groove

Question 19

Pectoralis Minor

Answer 19

O:
Ribs 2-5 (may vary)

I:
Coracoid process of scapula

Question 20

Subclavius

Answer 20

O:
1st rib

I:
Clavicle