UL Origins and Insertions Flashcards Preview

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Flashcards in UL Origins and Insertions Deck (54):
1

abductor digiti minimi

Origin: pisiform

Insertion: base of the proximal phalanx of the 5th digit on its ulnar side

2

abductor pollicis brevis

Origin: flexor retinaculum, scaphoid, trapezium

Insertion: base of the proximal phalanx of the first digit

3

abductor pollicis longus

Origin: middle one-third of the posterior surface of the radius, interosseous membrane, mid-portion of posterolateral ulna

Insertion: radial side of the base of the first metacarpal

4

adductor pollicis

Origin: oblique head: capitate and base of the 2nd and 3rd metacarpals; transverse head: shaft of the 3rd metacarpal

Insertion: base of the proximal phalanx of the thumb

5

anconeus

Origin: lateral epicondyle of the humerus

Insertion: lateral side of the olecranon and the upper one-fourth of the ulna

6

biceps brachii

Origin:

  • short head: tip of the coracoid process of the scapula;
  • long head: supraglenoid tubercle of the scapula

Insertion: tuberosity of the radius

7

brachialis

Origin: anterior surface of the lower one-half of the humerus and the associated intermuscular septa

Insertion: coronoid process of the ulna

8

brachioradialis

Origin: upper two-thirds of the lateral supracondylar ridge of the humerus

Insertion: lateral side of the base of the styloid process of the radius

9

coracobrachialis

Origin: coracoid process of the scapula

Insertion: medial side of the humerus at mid-shaft

10

deltoid

Origin: lateral one-third of the clavicle, acromion, the lower lip of the crest of the spine of the scapula

Insertion: deltoid tuberosity of the humerus

11

dorsal interosseous (hand)

Origin: four muscles, each arising from two adjacent metacarpal shafts

Insertion: base of the proximal phalanx and the extensor expansion on lateral side of the 2nd digit, lateral & medial sides of the 3rd digit, and medial side of the 4th digit

12

extensor carpi radialis brevis

Origin: lateral supracondylar ridge of the humerus (common extensor tendon

Insertion: dorsum of the third metacarpal bone (base)

13

extensor carpi radialis longus

Origin: lower one-third of the lateral supracondylar ridge of the humerus

Insertion: dorsum of the second metacarpal bone (base)

14

extensor carpi ulnaris

Origin: common extensor tendon & the middle one-half of the posterior border of the ulna

Insertion: medial side of the base of the 5th metacarpal

15

extensor digiti minimi

Origin: common extensor tendon (lateral epicondyle of the humerus)

Insertion: joins the extensor digitorum tendon to the 5th digit and inserts into the extensor expansion

16

extensor digitorum

Origin: common extensor tendon (lateral epicondyle of the humerus)

Insertion: extensor expansion of digits 2-5

17

extensor indicis

Origin: interosseous membrane and the posterolateral surface of the distal ulna

Insertion: its tendon joins the tendon of the extensor digitorum to the second digit; both tendons insert into the extensor expansion

18

extensor pollicis brevis

Origin: interosseous membrane and the posterior surface of the distal radius

Insertion: base of the proximal phalanx of the thumb

19

extensor pollicis longus

Origin: interosseous membrane and middle part of the posterolateral surface of the ulna

Insertion: base of the distal phalanx of the thumb

20

flexor carpi radialis

Origin: common flexor tendon from the medial epicondyle of the humerus

Insertion: base of the second and third metacarpals

21

flexor carpi ulnaris

Origin: common flexor tendon & (ulnar head) from medial border of olecranon & upper 2/3 of the posterior border of the ulna

Insertion: pisiform, hook of hamate, and base of 5th metacarpal

22

flexor digiti minimi brevis (hand)

Origin: hook of hamate & the flexor retinaculum

Insertion: proximal phalanx of the 5th digit

23

flexor digitorum profundus

Origin: posterior border of the ulna, proximal two-thirds of medial border of ulna, interosseous membrane

Insertion: base of the distal phalanx of digits 2-5

24

flexor digitorum superficialis

Origin: humeroulnar head: common flexor tendon; radial head: middle 1/3 of radius

Insertion: shafts of the middle phalanges of digits 2-5

25

flexor pollicis brevis

Origin: flexor retinaculum, trapezium

Insertion: proximal phalanx of the 1st digit

26

flexor pollicis longus

Origin: anterior surface of radius and interosseous membrane

Insertion: base of the distal phalanx of the thumb

27

infraspinatus

Origin: infraspinatous fossa

Insertion: greater tubercle of the humerus (middle facet)

28

interosseous, dorsal (hand)

Origin: four muscles, each arising from two adjacent metacarpal shafts

Insertion: base of the proximal phalanx and the extensor expansion on lateral side of the 2nd digit, lateral & medial sides of the 3rd digit, and medial side of the 4th digit

29

interosseous, palmar

Origin: four muscles, arising from the palmar surface of the shafts of metacarpals 1, 2, 4, & 5 (the 1st palmar interosseous is often fused with the adductor pollicis m.)

Insertion: base of the proximal phalanx and extensor expansion of the medial side of digits 1 & 2, and lateral side of digits 4 & 5

30

latissimus dorsi

Origin: vertebral spines from T7 to the sacrum, posterior third of the iliac crest, lower 3 or 4 ribs, sometimes from the inferior angle of the scapula

Insertion: floor of the intertubercular groove

31

levator scapulae

Origin: transverse processes of C1-C4 vertebrae

Insertion: medial border of the scapula from the superior angle to the spine

32

lumbrical

Origin: flexor digitorum profundus tendons of digits 2-5

Insertion: extensor expansion on the radial side of the proximal phalanx of digits 2-5

33

opponens digiti minimi

Origin: hook of hamate and flexor retinaculum

Insertion: shaft of 5th metacarpal

34

opponens pollicis

Origin: flexor retinaculum, trapezium

Insertion: shaft of 1st metacarpal

35

palmar interosseous

Origin: four muscles, arising from the palmar surface of the shafts of metacarpals 1, 2, 4, & 5 (the 1st palmar interosseous is often fused with the adductor pollicis m.)

Insertion: base of the proximal phalanx and extensor expansion of the medial side of digits 1 & 2, and lateral side of digits 4 & 5

36

palmaris brevis

Origin: fascia overlying the hypothenar eminence

Insertion: skin of the palm near the ulnar border of the hand

37

palmaris longus

Origin: common flexor tendon, from the medial epicondyle of the humerus

Insertion: palmar aponeurosis

38

pectoralis major

Origin: medial 1/2 of the clavicle, manubrium & body of sternum, costal cartilages of ribs 2-6, sometimes from the rectus sheath of the upper abdominal wall

Insertion: crest of the greater tubercle of the humerus

39

pectoralis minor

Origin: ribs 3-5

Insertion: coracoid process of the scapula

40

pronator quadratus

Origin: medial side of the anterior surface of the distal one-fourth of the ulna

Insertion: anterior surface of the distal one-fourth of the radius

41

pronator teres

Origin: common flexor tendon and (deep or ulnar head) from medial side of coronoid process of the ulna

Insertion: midpoint of the lateral side of the shaft of the radius

42

rhomboideus major

Origin: spines of vertebrae T2-T5

Insertion: medial border of the scapula inferior to the spine of the scapula

43

rhomboideus minor

Origin: inferior end of the ligamentum nuchae, spines of vertebrae C7 and T1

Insertion: medial border of the scapula at the root of the spine of the scapula

44

serratus anterior

Origin: ribs 1-8 or 9

Insertion: medial border of the scapula on its costal (deep) surface

45

serratus posterior inferior

Origin: thoracolumbar fascia, spines of vertebrae T11-T12 and L1-L2

Insertion: ribs 9-12, lateral to the angles

46

serratus posterior superior

Origin: ligamentum nuchae, spines of vertebrae C7 and T1-T3

Insertion: ribs 1-4, lateral to the angles

47

subclavius

Origin: first rib and its cartilage

Insertion: inferior surface of the clavicle

48

subscapularis

Origin: medial two-thirds of the costal surface of the scapula (subscapular fossa)

Insertion: lesser tubercle of the humerus

49

supinator

Origin: lateral epicondyle of the humerus, supinator crest & fossa of the ulna, radial collateral ligament, annular ligament

Insertion: lateral side of proximal one-third of the radius

50

supraspinatus

Origin: supraspinatous fossa

Insertion: greater tubercle of the humerus (highest facet)

51

teres major

Origin: dorsal surface of the inferior angle of the scapula

Insertion: crest of the lesser tubercle of the humerus

52

teres minor

Origin: upper 2/3 of the lateral border of the scapula

Insertion: greater tubercle of the humerus (lowest facet)

53

trapezius

Origin: medial third of the superior nuchal line, external occipital protuberance, ligamentum nuchae, spinous processes of vertebrae C7-T12

Insertion: lateral third of the clavicle, medial side of the acromion and the upper crest of the scapular spine, tubercle of the scapular spine

54

triceps brachii

Origin:

  • long head: infraglenoid tubercle of the scapula;
  • lateral head: posterolateral humerus & lateral intermuscular septum;
  • medial head: posteromedial surface of the inferior 1/2 of the humerus

Insertion: olecranon process of the ulna