Origins Of Upper Limb Muscles

Question 1

What is the origin of pectoralis major?

Answer 1

Clavicular head to clavicle

Sternocostal head to sternum and ribs

Question 2

What is the origin of pectoralis minor?

Answer 2

Anterior surface of ribs 3-55

Question 3

What is the origin of serratus anterior?

Answer 3

Upper 8 or 9 ribs

Question 4

What is the origin of deltoid?

Answer 4

Spine of scapula

Acromion

Clavicle

Question 5

What is the origin of teres major?

Answer 5

Posterior surface of inferior angle of scapula

Question 6

What is the origin of supraspinatus?

Answer 6

Supraspinous fossa of scapula

Question 7

What is the origin of infraspinatus?

Answer 7

Infraspinous fossa of scapula

Question 8

What is the origin of subscapularis?

Answer 8

Subscapular fossa of scapula

Question 9

What is the origin of teres minor?

Answer 9

Posterior surface of scapula, adjacent to lateral border

Question 10

What are the origins of trapezius?

Answer 10

Skull
Ligamentum nuchae
Spinous processes of C7-T12

Question 11

What are the origins of latissimus dorsi?

Answer 11

Spinous processes of T6-T12
Iliac crest
Thoracolumbar fascia
Inferior 3 ribs

Question 12

What is the origin of lavatory scapulae?

Answer 12

Transverse processes of C1-C4 vertebrae

Question 13

What is the origin of rhomboid minor?

Answer 13

Spinous processes of C7-T1

Question 14

What is the origin of rhomboid major?

Answer 14

Spinous processes of T2-T5

Question 15

What is the origin of the long head of biceps brachii?

Answer 15

Supraglenoid tubercle of scapula

Question 16

What is the origin of the short head of biceps brachii?

Answer 16

Coracoid process of scapula

Question 17

What is the origin of coracobrachialis?

Answer 17

Coracoid process of scapula

Question 18

What is the origin of brachialis?

Answer 18

Medial and lateral surfaces of humeral shaft

Question 19

What is the origin of the long head of triceps brachii?

Answer 19

Infraglenoidal tubercle

Question 20

What is the origin of the medial head of triceps brachii?

Answer 20

From humerus, inferior to radial groove

Question 21

What is the origin of the lateral head of triceps brachii?

Answer 21

From humerus, superior to radial groove

Question 22

What is the origin of pronator teres?

Answer 22

Medial epicondyle

Coronoid process of ulna

Question 23

What is the origin of flexor carpi radialis?

Answer 23

Medial epicondyle

Question 24

What is the origin of palmaris longus?

Answer 24

Medial epicondyle

Question 25

What is the origin of flexor carpi ulnaris?

Answer 25

Medial epicondyle

Question 26

What is the origin of the humeroulnar head of flexor digitorum superficialis?

Answer 26

Medial epicondyle

Question 27

What is the origin of the radial head of flexor digitorum superficialis?

Answer 27

Anterior border of radius

Question 28

What is the origin of flexor digitorum profundus?

Answer 28

Ulnar and interosseus membrane

Question 29

What is the origin of flexor pollicis longus?

Answer 29

Anterior surface of radius and surrounding interosseus membrane

Question 30

What is the origin of pronator quadratus?

Answer 30

Anterior surface of ulna

Question 31

What is the origin of brachioradialis?

Answer 31

Lateral supraepicondylar ridge of humerus

Question 32

What is the origin of extensor carpi radialis brevis?

Answer 32

Lateral epicondyle of humerus

Question 33

What is the origin of extensor carpi radialis longus?

Answer 33

Lateral supracondyle ridge of humerus

Question 34

What is the origin of extensor digitorum?

Answer 34

Lateral epicondyle

Question 35

What is the origin of extensor digiti minimi?

Answer 35

Lateral epicondyle

Question 36

What is the origin of extensor carpi ulnaris?

Answer 36

Lateral epicondyle

Question 37

What is the origin of anconeus?

Answer 37

Lateral epicondyle

Question 38

What is the origin of supinator?

Answer 38

Lateral epicondyle Posterior surface of ulna

Question 39

What is the origin of abductor pollicis longus?

Answer 39

Posterior surfaces of ulna, radius and interosseus membrane

Question 40

What is the origin of extensor pollicis brevis?

Answer 40

Posterior surface of radius and interosseus membrane

Question 41

What is the origin of extensor pollicis longus?

Answer 41

Posterior surface of ulna and interosseus membrane

Question 42

What is the origin of extensor indicis?

Answer 42

Posterior surface of ulna and interosseus membrane (distal to extensor pollicis longus)

Question 43

What is the origin of opponens pollicis?

Answer 43

Tubercle of trapezium and flexor retinaculum

Question 44

What is the origin of abductor pollicis brevis?

Answer 44

Tubercles of scaphoid and trapezium and flexor retinaculum

Question 45

What is the origin of flexor pollicis brevis?

Answer 45

Tubercle of trapezium and flexor retinaculum

Question 46

What is the origin of opponens digiti minimi?

Answer 46

Hook of hamate and flexor retinaculum

Question 47

What is the origin of abductor digiti minimi?

Answer 47

Pisiform and flexor carpi ulnaris tendon

Question 48

What is the origin of flexor digiti minimi brevis?

Answer 48

Hook of hamate and flexor retinaculum

Question 49

What are the origins of the lumbricals?

Answer 49

Each originates from tendon of flexor digitorum profundus

Question 50

What is the origin of dorsal interossei?

Answer 50

Lateral and medial surfaces of metacarpals

Question 51

What is the origin of palmar interossei?

Answer 51

Lateral and medial surfaces of metacarpals

Question 52

What is the origin of palmaris brevis?

Answer 52

Palmar aponeurosis and flexor retinaculum

Question 53

What is the origin of adductor pollicis?

Answer 53

One head from third metacarpal Other head from capitate Adjacent areas of second and third metacarpals