UL Shoulder + Back muscles and ligaments

Question 1

Coracobrachialis origin and insertion

Answer 1

O: Corocoid process

I Medial aspect of humerus (shaft)

Question 2

Levator Scapulae origin and insertion

Answer 2

O: Transverse processes C1-C4
I: Medial border of scapula, between superior angle and superior portion of Spine of scapula

Question 3

Triceps origin and insertion

Answer 3

O:
Long head – Infraglenoid tubercle of the scapula
Lateral head – posterior surface of proximal half of the humerus
Medial head – posterior surface of the distal half of the humerus

I: Olecranon process of the ulna

Question 4

Pectoralis Major origin and insertion

Answer 4

O: Medial half of clavicle, sternum and cartilage of the first-6th ribs

I: Crest of greater tubercle of humerus

Question 5

Rhomboid major origin and insertion

Answer 5

O: Spinous processes of T2-T5
I: Medial border of scapula between spine of scapula and inferior angle.

Question 6

Rhomboid Minor origin and insertion

Answer 6

O: Spinous processes of C7-T1
I: upper portion of medial border of scapula , across from spine of scapula

Question 7

Pectoralis Minor origin and insertion

Answer 7

O: 3rd, 4th and 5th ribs
I: medial surface of corocoid process

Question 8

Serratus Anterior origin and insertion

Answer 8

O: External surface of the upper 8/9 ribs
I: Anterior surface of the medial border of the scapula

Question 9

Rotator Cuff muscles (4)

Answer 9

Supraspinatus
Infraspinatus
Teres Minor
Subscapularis

Question 10

Supraspinatus origin and insertion

Answer 10

O – Supraspinus fossa.

I: Greater tubercle of humerus

Question 11

Infraspinatus origin and insertion

Answer 11

O – Infraspinous fossa.

I: Greater tubercle of humerus

Question 12

Teres Minor origin and insertion

Answer 12

O- Upper 2/3rds of lateral border scapula.

I: Greater tubercle of humerus

Question 13

Subscapularis origin and insertion

Answer 13

O – Subscapular fossa.

I – Lesser tubercle of humerus

Question 14

Latissimus Dorsi origin and insertion

Answer 14

O: Inferior angle of scapula, spinous processes of T7-T12, last ¾ ribs, thoracolumbar fascia and posterior iliac crest
I: Intertubercle groove of humerus

Question 15

Teres Major origin and insertion

Answer 15

O: Inferior angle and lower 1/3 of lateral border of scapula
I: crest of the lesser tubercle of the humerus

Question 16

Trapezius origin and insertion

Answer 16

O: External occipital protuberance, medial portion of superior nuchal line of the occiput, ligamentum nuchae, and spinous processes C7-T12

I: Lateral 1/3 of clavicle, acromion and spine of scapula

Question 17

Deltoid origin and insertion

Answer 17

O: (same as Trapezius insertion) Lateral 1/3 of clavicle, acromion and spine of scapula
I: Deltoid tuberosity

Question 18

Biceps origin and insertion

Answer 18

O: Short head – Corocoid process of scapula
Long head – supraglenoid tubercle of scapula

I: Tuberosity of the radius and aponeurosis of the biceps brachii

Question 19

Brachialis origin and insertion

Answer 19

O:Distal ½ of anterior surface of humerus
I:Tuberosity and coronoid process of the ulna

Question 20

Brachioradialis origin and insertion

Answer 20

O: Proximal 2/3rds of lateral supracondylar ridge of humerus
I: Styloid process of Radius