Shoulder/Back O/I

Question 1

Subscapularis

Answer 1

Origin: Medial 2/3 subscapular fossa and covering fascia

Insertion: Lesser tubercle of humerus

Question 2

Supraspinatus

Answer 2

Origin: Medial 2/3 supraspinatus fossa and covering fascia

Insertion: Upper facet greater tubercle of humerus

Question 3

Infraspinatus

Answer 3

Origin: Medial 2/3 infraspinous fossa of scapula and covering fascia

Insertion: Middle facet greater tubercle of humerus

Question 4

Teres Minor

Answer 4

Origin: Upper 2/3 lateral border of scapula

Insertion: Inferior facet greater tubercle of humerus

Question 5

Trapezius

Answer 5

Origin: Medial 1/3 superior nuchal line of occipital bone
External occipital protuberance
Ligamentum nuchae
C7-T12 SP & corresponding supraspinous ligaments

Insertion:
(upper) posterior border lateral 1/3 clavicle
(middle) medial margin of acromion superior lip crest of
scapular spine
(lower) tubercle at medial end of scapular
spine

Question 6

Latissimus dorsi

Answer 6

Origin: Posterior layer of thoracolumbar fascia
T7-S5 SP and intervening supraspinous and interspinous
ligament
Posterior part of outer lip iliac crest
Outer surfaces ribs 9-12
Inferior angle scapula

Insertion: Floor of intertubercular groove of humerus

Question 7

Rhomboid minor

Answer 7

Origin: C7-T1 SP
Lower part ligamentum nuchae and supraspinous
ligament

Insertion: Small triangular area at base of spine on medial
border of scapula

Question 8

Rhomboid major

Answer 8

Origin: T2-T5 SP & intervening supraspinous ligament

Insertion: Medial border scapula between base of spine
and inferior angle

Question 9

Levator scapulae

Answer 9

Origin: TP C1-4

Insertion: Upper part medial border of scapula

Question 10

Serratus anterior

Answer 10

Origin: Outer surface upper 8/9 ribs and intercostal fascia

Insertion: Costal surface medial border scapula

Question 11

Subclavius

Answer 11

O/I: Runs between 1st rib and undersurface of clavicle

Question 12

Pectoralis minor

Answer 12

Origin: Coracoid process of scapula

Insertion: Outer surface ribs 3, 4, 5 and intercostal fascia

Question 13

Pectoralis major

Answer 13

Origin: Medial half anterior border clavicle
Anterior surface sternum
Anterior surface upper 6 CC & 6th rib

Insertion: Via laminated tendon into lateral lip
intertubercular groove

Question 14

Coracobrachialis

Answer 14

Origin: Apex coracoid process (with biceps)

Insertion: Medial side shaft of humerus

Question 15

Deltoid

Answer 15

Origin: (ant. fibres) Anterior border lateral 1/3 clavicle
(middle fibres) outer margin of acromion
(post. fibres) lower border spine of scapula

Insertion: Deltoid tuberosity of humerus

Question 16

Teres major

Answer 16

Origin: Lower lateral 1/3 border and inferior angle scapula

Insertion: Medial lip intertubercular groove on humerus