Muscle Origin/Insertion

Question 0

Latissimus dorsi

Answer 0

Origin: spinous process of T1-L3
Insertion: intertubercular groove on humerous

Question 1

Trapezius

Answer 1

Origin: occiput, nuchal ligament, spinous process of thoracic vertebra
Insertion: scapular spine, acromion

Question 2

Rhomboideus major and minor

Answer 2

Origin: upper thoracic spinous process
Insertion: vertebral border of scapula

Question 3

Levator scapulae

Answer 3

Origin: transverse process of C1-4
Insertion: vertebral border of scapula between superior angle and base of scapular spine

Question 4

Serratus anterior

Answer 4

Origin: ribs 1-8 or 9
Insertion: vertebral border of scapula

Question 5

Teres major

Answer 5

Origin: lower axillary border of scapula
Insertion: medial lip of inter tubercular groove on humerus

Question 6

Deltoideus

Answer 6

Origin: clavicle, acromion, scapular spine
Insertion: deltoid tuberosity on humerus

Question 7

Supraspinatus

Answer 7

Origin: supraspinous fossa
Insertion: greater tubercle of humerus

Question 8

Teres minor

Answer 8

Origin: middle of axillary border of scapula
Insertion: greater tubercle of humerus

Question 9

Subscapularis

Answer 9

Origin: subscapular fossa
Insertion: lesser tubercle of humerus

Question 10

Pectoralis major

Answer 10

Origin:
-clavicular head: medial half of clavicle
-sternocostal head: ribs 2-6, costal margin of sternum
Insertion: lateral lip of intertubercular groove of humerus

Question 11

Pectoralis minor

Answer 11

Origin: ribs 2-5
Insertion: coracoid process of scapula

Question 12

Coracobrachialis

Answer 12

Origin: coracoid process of scapula
Insertion: proximal shaft of humerus

Question 13

Biceps brachii

Answer 13

Origin:
-long head: supraglenoid tubercle of the scapula
-short head: coracoid process of scapula
Insertion: bicipital tuberosity of radius (non functionally attached to ulnar tuberosity via bicipital aponeurosis)

Question 14

Brachialis

Answer 14

Origin: distal two thirds of humeral shaft
Insertion: ulnar tuberosity of ulna

Question 15

Triceps brachii

Answer 15

Origin:
-long head: infraglenoid tubercle of scapula
-medial head: posterior surface of medial border of humerus
-lateral head: posterior surface of lateral border of humerus
Insertion: olecranon

Question 16

Pronator teres

Answer 16

Origin: medial epicondyle of humerus, coronoid process of ulna
Insertion: midshaft radius

Question 17

Flexor carpi radialis

Answer 17

Origin: medial epicondyle of humerus
Insertion: base of 2nd and 3rd metacarpals

Question 18

Palmaris longus

Answer 18

Origin: medial epicondyle of humerus
Insertion: palmar aponeurosis

Question 19

Flexor digitorum superficialis

Answer 19

Origin: medial epicondyle of humerus, coronoid process do ulna, anterior border of proximal radius
Insertion: base of middle phalanges 2-5

Question 20

Pronator quadratus

Answer 20

Origin: distal portion of ulnar shaft
Insertion: distal portion of radial shaft

Question 21

Flexor pollicis longus

Answer 21

Origin: proximal half of radius and adjacent interosseus membrane
Insertion: 1st digit phalanx

Question 22

Flexor digitorum profundus

Answer 22

Origin: proximal two thirds of ulnar shaft and adjacent interosseous membrane
Insertion: base of distal phalanx of digits 2-5

Question 23

Flexor carpi ulnaris

Answer 23

Origin: medial epicondyle of humerous, medial side of olecranon, proximal 2/3 of ulnar shaft
Insertion: pisiform, hamate, base of 5th metacarpal, flexor retinaculum

Question 24

Anconeus

Answer 24

Origin: lateral epicondyle of humerous Insertion: lateral side of olecranon

Question 25

Brachioradialis

Answer 25

Origin: lateral supracondylar ridge of humerous Insertion: lateral surface of distal radius

Question 26

Extensor carpi radialis longus

Answer 26

Origin: lateral supracondylar ridge of humerous Insertion: dorsal surface of base of second metacarpal

Question 27

Extensor carpi radialis brevis

Answer 27

Origin: lateral epicondyle of humerous Insertion: dorsal surface of base of 3rd metacarpal

Question 28

Extensor digitorum

Answer 28

Origin: lateral epicondyle of humerous Insertion: dorsal digital expansion hoods of digits 2-5

Question 29

Extensor digit minimi

Answer 29

Origin: lateral epicondyle of humerous Insertion: dorsal digital expansion hood of digit 5

Question 30

Extensor carpi ulnaris

Answer 30

Origin: lateral epicondyle of humerous Insertion: medial side of base of 5th metacarpal

Question 31

Supinator

Answer 31

Origin: lateral epicondyle of humerous, supinator crest of ulna Insertion: lateral surface of proximal radius

Question 32

Extensor indicis

Answer 32

Origin: posterior surface of distal ulna Insertion: dorsal digital expansion hood of digit 2

Question 33

Abductor pollicis longus

Answer 33

Origin: posterior surfaces of radius and ulna Insertion: lateral side of the base of 1st metacarpal, trapezium

Question 34

Extensor pollicis brevis

Answer 34

Origin: posterior surface of distal radius Insertion: base of thumb's proximal phalanx

Question 35

Extensor pollicis longus

Answer 35

Origin: posterior surfaces of middle ulna Insertion: base of thumbs distal phalanx

Question 36

Abductor pollicis brevis

Answer 36

Origin: flexor retinaculum, trapezium, scaphoid Insertion: base of 1st dig it's proximal phalanx

Question 37

Flexor pollicis brevis

Answer 37

Origin: flexor retinaculum, trapezium, trapezoid, capitate Insertion: base of 1st digit's proximal phalanx

Question 38

Opponents pollicis

Answer 38

Origin: trapezium, flexor retinaculum Insertion: lateral border of 1st metacarpal

Question 39

Abductor digit minimi

Answer 39

Origin: pisiform, tendon of flexor carpi ulnaris Insertion: base of 5th digits proximal phalanx

Question 40

Flexor digit minimi

Answer 40

Origin: hamate hamulus, flexor retinaculum Insertion: base of 5th digit's proximal phalanx

Question 41

Opponents digiti minimi

Answer 41

Origin: hamate hamulus, flexor retinaculum Insertion: midshaft of 5th metacarpal

Question 42

Palmaris brevis

Answer 42

Origin: flexor retinaculum, medial palmar aponeurosis, Insertion: skin of hypothenar eminence

Question 43

Lumbericals

Answer 43

Origin: tendons of flexor digitorum profoundis in palm Insertion: extensor hoods digits 2-5

Question 44

Dorsal interossei (4)

Answer 44

Origin: shafts of adjacent metacarpals Insertion: base of proximal phalanx, dorsal expansion hoods digits 2-4

Question 45

Palmar interossei (3)

Answer 45

Origin: medial side of 2nd metacarpal shaft, lateral side of 4th and 5th metacarpal shafts Insertion: base of proximal phalanx digits 2, 4, 5

Question 46

Adductor pollicis

Answer 46

Origin: -oblique head: capitate, 2-3rd metacarpals -transverse head: 3rd metacarpal Insertion: base of 1st proximal phalanx