UE Scapula/Shoulder/Upper Arm

Question 1

Pectoralis Major - Clavicular Fibers

Answer 1

O - Anterior surface of sternal 1/2 of clavicle

I - Crest of greater tubercle of humerus

Question 2

Pectoralis Major - Sternal Fibers

Answer 2

O - Anterior surface of sternum, cartilages of 1st 6-7 ribs, and aponeurosis of external obliques

I - Crest of greater tubercle of humerus

Question 3

Pectoralis Minor

Answer 3

O - Superior margins, outer surfaces of 3-5 ribs near the cartilages; and from fascia over corresponding intercostal muscles

I - Medial border, superior surface of coracoid process of scapula

Question 4

Subclavius

Answer 4

O - 1st rib and cartilage

I - Undersurface of the clavicle

Question 5

Latissimus Dorsi

Answer 5

O - Spinous processes of last 6 thoracic vertebra, last 3 or 4 ribs, through the thoracolumbar fascia from the lumbar and sacral vertebrae and posterior 1/3 of external lip of iliac crest, a slip from the inferior angle of the scapula

I - Intertubercular groove of humerus

Question 6

Teres Major

Answer 6

O - Dorsal surface of inferior angle and lower third of lateral border of scapula

I - Crest of lesser tubercle of humerus

Question 7

Serratus Anterior

Answer 7

O - Outer surface and superior borders of upper 8 or 9 ribs

I - Costal surface of medial border of scapula

Question 8

Supraspinatus

Answer 8

O - Medial 2/3 of supraspinous fossa of scapula

I - Superior facet of greater tubercle of humerus and shoulder joint capsule

Question 9

Infraspinatus

Answer 9

O - Medial 2/3 of infraspinous fossa of scapula

I - Middle facet of greater tubercle of humerus and shoulder joint capsule

Question 10

Subscapularis

Answer 10

O - Subscapular fossa of scapula

I - Lesser tubercle of humerus and shoulder joint capsule

Question 11

Anterior Deltoid

Answer 11

O - Anterior border, superior surface of acromion, and lateral 1/3 of clavicle

I - Deltoid tuberosity

Question 12

Middle Deltoid

Answer 12

O - Lateral margin and superior surface of acromion

I - Deltoid tuberosity

Question 13

Posterior Deltoid

Answer 13

O - Inferior lip of posterior border of spine of scapula

I - Deltoid tuberosity

Question 14

Upper Trapezius

Answer 14

O - External occipital protuberance, medial 1/3 of superior nuchal line, ligamentum nuchae and spinous process of C7 vertebra

I - Lateral 1/3 of clavicle and acromion process of scapula

Question 15

Middle Trapezius

Answer 15

O - Spinous processes of T1-5

I - Medial margin of acromion process and superior lip of spine of scapula

Question 16

Lower Trapezius

Answer 16

O - Spinous process of T6-12

I - Tubercle at apex of spine of scapula

Question 17

Levator Scapulae

Answer 17

O - Transverse process of cervical vertebrae 1-4

I - medial border of scapula between superior angle and root of spine

Question 18

Rhomboideus Major

Answer 18

O - Spinous processes of T2-5

I - By fibrous attachment of medial border of scapula between spine and inferior angle

Question 19

Rhomboideus Minor

Answer 19

O - Ligamentum nuchae, spinous processes of C7-T1 vertebrae

I - Medial border at root of spine of scapula

Question 20

Teres Minor

Answer 20

O - Upper 2/3 and dorsal surface of lateral border of scapula

I - Lowest facet of great tubercle of humerus and shoulder joint capsule

Question 21

Triceps Brachii

Answer 21

O -
Long Head - Infraglenoid tubercle of scapula
Lateral head - Lateral and posterior surface of proximal 1/2 of body of humerus lateral inter muscular septum
Medial head - Distal 2/3 of medial and posterior surface of humerus below the radial groove and from medial intermuscular septum

I - Posterior surface of olecranon process of ulna and ante brachial fascia

Question 22

Anconeus

Answer 22

O - Lateral epicondyle of humerus, posterior surface

I - Lateral side of olecranon process, upper 1/4 of posterior surface of body of ulna

Question 23

Brachioradialis

Answer 23

O - Proximal 2/3 of lateral supracondylar ridge of humerus, lateral intermuscular septum

I - Lateral side of base of styloid process of radius

Question 24

Coracobrachialis

Answer 24

O - Apex of coracoid process of scapular

I - Medial surface of middle of shaft of humerus, opposite deltoid tuberosity

Question 25

Biceps Brachii

Answer 25

O - Short Head - Apex of coracoid process of scapula Long Head - Supraglenoid tubercle of scapula I - Radial tuberosity, aponeurosis of biceps brachii

Question 26

Brachialis

Answer 26

O - Distal 1/2 of anterior surface of humerus, medial and lateral intermuscular septa I - Tuberosity and coronoid process of ulna