Muscles of shoulder gridle/upper extremity

Question 1

Name the origin/insertion of pectoralis major

Answer 1

ORIGIN
1. Clavicular head: medial clavicle
2. Sternocostal head: sternum and costal cartilages of ribs 2-6
INSERTION
Greater tubercle and lateral lip (more lateral of the 3 muscles that insert here) of intertubercular groove of humerus (between lesser and greater)

Question 2

Name the origin/insertion of pectoralis minor

Answer 2

ORIGIN
Ribs 2-5 near the costal cartilages
INSERTION
Coracoid process of scapula

Question 3

Name the origin/insertion of subclavius

Answer 3

ORIGIN
1st rib
INSERTION
Subclavian groove of clavicle

Question 4

Name the origin/insertion of serratus anterior (dentelé)

Answer 4

ORIGIN
Ribs 1-8
INSERTION
Medial border and inferior angle of scapula

Question 5

Name the origin/insertion of serratus posterior superior (deep to the rhomboid)

Answer 5

ORIGIN
Ligamentum nuchae and spinous processes of C7-T3 vertebrae
INSERTION
Superior border of ribs 2-4

Question 6

Name the origin/insertion of serratus posterior inferior (deep to the lats)

Answer 6

ORIGIN
Spinous processes of T11-L2 vertebrae
INSERTION
Inferior borders of ribs 8-12 near their angles

Question 7

Name the origin/insertion of trapezius (superior, middle and inferior fibers)

Answer 7

ORIGIN
Occipital bone, ligamentum nuchae and spinous processes of C7-T12
INSERTION
Lateral 1/3 of clavicle, spine and acromion of scapula

Question 8

Name the origin/insertion of latissimus dorsi

Answer 8

ORIGIN
Spinous processes of T7-L5, sacral crest, iliac crest and inferior 4 ribs
INSERTION
Floor of intertubercular groove of humerus

Question 9

Name the origin/insertion of levator scapulae

Answer 9

ORIGIN
Transverse processes of C1-C4
INSERTION
Upper 1/3 (top one) of medial border of scapula

Question 10

Name the origin/insertion of rhomboid major

Answer 10

ORIGIN
Spinous processes of T2-T5
INSERTION
Lower 1/3 (bottom one) of medial border of scapula

Question 11

Name the origin/insertion of rhomboid minor

Answer 11

ORIGIN
Spinous processes of C7-T1
INSERTION
Medial border (middle one) of scapula superior to spine

Question 12

Name the origin/insertion of deltoid

Answer 12

ORIGIN
Lateral 1/3 of clavicle, acromion and spine of scapula
INSERTION
Deltoid tuberosity

Question 13

Name the origin/insertion of supraspinatus (rotator cuff)

Answer 13

ORIGIN
Supraspinous fossa of scapula
INSERTION
Greater tubercle of humerus (1)

Question 14

Name the origin/insertion of infraspinatus (rotator cuff)

Answer 14

ORIGIN
Infraspinous fossa of scapula
INSERTION
Greater tubercle of humerus (2)

Question 15

Name the origin/insertion of teres minor (rotator cuff)

Answer 15

ORIGIN
Inferior lateral border of scapula
INSERTION
Greater tubercle of humerus (3)

Question 16

Name the origin/insertion of teres major (rotator cuff)

Answer 16

ORIGIN
Inferior angle of scapula
INSERTION
Medial lip of intertubercular groove of humerus

Question 17

Name the origin/insertion of subscapularis (rotator cuff)

Answer 17

ORIGIN
Subscapular fossa of scapula (anterior side)
INSERTION
Lesser tubercle of humerus (3rd one medial)

Question 18

Name the origin/insertion of biceps brachii (long and short head)

Answer 18

ORIGIN
1. Long head : supraglenoid tubercle of scapula
2. Short head : coracoid process of scapula
INSERTION
Radial tuberosity of radius and deep fascia of forearm via bicipital aponeurosis

Question 19

Name the origin/insertion of brachialis

Answer 19

ORIGIN
Distal anterior surface of humerus
INSERTION
Ulnar tuberosity and coronoid process of ulna

Question 20

Name the origin/insertion of coracobrachialis

Answer 20

ORIGIN
Coracoid process of scapula
INSERTION
Middle 1/3 of medial surface of shaft of humerus

Question 21

Name the origin/insertion of triceps brachii (long, lateral and medial heads)

Answer 21

ORIGIN
1. Long head : infraglenoid tubercle of scapula
2. Lateral head : lateral and posterior surface of humerus, above radial groove
3. Medial head : posterior surface of humerus, below radial groove
INSERTION
Olecranon process of ulna

Question 22

Name the origin/insertion of brachioradialis

Answer 22

ORIGIN
Lateral border of distal end of humerus
INSERTION
Superior to styloid process of radius

Question 23

Name the origin/insertion of pronator teres

Answer 23

ORIGIN
Medial epicondyle of humerus and coronoid process of ulna
INSERTION
Mid-lateral shaft of radius

Question 24

Name the origin/insertion of flexor carpi radialis

Answer 24

ORIGIN
Medial epicondyle of humerus
INSERTION
Base of 2nd and 3rd metacarpal

Question 25

Name the origin/insertion of palmaris longus

Answer 25

ORIGIN Medial epicondyle of humerus INSERTION Flexor retinaculum and aponeurosis

Question 26

Name the origin/insertion of flexor carpi ulnaris

Answer 26

ORIGIN Medial epicondyle of humerus INSERTION Pisiform, hook of hamate and base of 5th metacarpal

Question 27

Name the origin/insertion of flexor digitorum superficialis (deep to palmaris longus + big)

Answer 27

ORIGIN Medial epicondyle of humerus, proximal radius and ulna INSERTION Middle phalanx of digits 2-5

Question 28

Name the origin/insertion of flexor digitorum profundus (deep to superficialis)

Answer 28

ORIGIN Anterior medial surface of shaft of ulna and interosseous membrane INSERTION Base of distal phalanges of digits 2-5

Question 29

Name the origin/insertion of flexor pollicis longus (all the way to the fingers)

Answer 29

ORIGIN Anterior surface of radius and interosseous membrane INSERTION Base of distal phalanx of thumb

Question 30

Name the origin/insertion of pronator quadratus

Answer 30

ORIGIN Distal shaft of ulna INSERTION Distal shaft of radius

Question 31

Name the origin/insertion of extensor carpi radialis longus

Answer 31

ORIGIN Lateral supracondylar ridge of humerus INSERTION Base of 2nd metacarpal

Question 32

Name the origin/insertion of extensor carpi radialis brevis

Answer 32

ORIGIN Lateral epicondyle of humerus INSERTION Base of 3rd metacarpal

Question 33

Name the origin/insertion of extensor digitorum

Answer 33

ORIGIN Lateral epicondyle of humerus INSERTION Middle and distal phalanges of digits 2-5

Question 34

Name the origin/insertion of extensor digiti minimi (avant-dernier)

Answer 34

ORIGIN Lateral epicondyle of humerus INSERTION Tandon of extensor digitorum on the 5th phalanx

Question 35

Name the origin/insertion of extensor carpi ulnaris

Answer 35

ORIGIN Lateral epicondyle of humerus and posterior border of ulna INSERTION Base of 5th metacarpal

Question 36

Name the origin/insertion of anconeus (high between carpi ulnaris)

Answer 36

ORIGIN Lateral epicondyle of humerus INSERTION Olecranon of ulna

Question 37

Name the origin/insertion of supinator (deep to brachioradialis)

Answer 37

ORIGIN Lateral epicondyle of humerus INSERTION Lateral proximal 1/3 of radius

Question 38

Name the origin/insertion of abductor pollicis longus

Answer 38

ORIGIN Posterior middle surface of radius and ulna & interosseous membrane INSERTION Base of 1st metacarpal

Question 39

Name the origin/insertion of extensor pollicis brevis

Answer 39

ORIGIN Posterior middle surface of radius & interosseous membrane INSERTION Base of proximal phalanx of the thumb

Question 40

Name the origin/insertion of extensor pollicis longus (deep to extensor digitorum)

Answer 40

ORIGIN Posterior middle surface of ulna & interosseous membrane INSERTION Base of distal phalanx of thumb

Question 41

Name the origin/insertion of extensor indicis (lateral to extensor pollicis longus)

Answer 41

ORIGIN Posterior middle surface of ulna & interosseous membrane INSERTION Blends into tendon of extensor digitorum of 2nd digit

Question 42

Name the muscles of the thumb

Answer 42

Abductor pollicis brevis Flexor pollicis brevis Opponens pollicis Adductor pollicis (oblique and transverse heads)

Question 43

Name the muscles of little finger (hypothenar)

Answer 43

Abductor digiti minimi Flexor digiti minimi brevis Opponens digiti minimi

Question 44

Name the muscles of the palm (deep)

Answer 44

``` Lumbricals (4) = flexion/extension of Palmar interossei (3 or 4) = adduction of fingers Dorsal interossei (4) = abduction of fingers ```