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2025 Anatomy II > Exam 1: Lecture 5: Arthrology, tendons, & ligaments of the thoracic & pelvic distal limb > Flashcards

Exam 1: Lecture 5: Arthrology, tendons, & ligaments of the thoracic & pelvic distal limb Flashcards

1
Q

What joint is starred?

A

Radiocarpal joint

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2
Q

What joint is starred?

A

Midcarpal joint

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3
Q

What joint is starred?

A

Carpometacarpal joint

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4
Q

What joint is starred?

A

Intercarpal joint

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5
Q

What lies on the sides of these joints?

A

Collateral ligaments (medial & lateral)

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6
Q

What important structure keeps the carpal joints only doing flexion and extension?

A

Collateral ligaments

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7
Q

If we were injecting the top circled carpal joint, what joint would we be in?

A

Radiocarpal joint

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8
Q

If we were injecting the bottom circled carpal joint, what joint would we be in?

A

Midcarpal joint

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9
Q

What joint is the top arrow pointing to?

A

Metacarpophalangeal joint (fetlock)

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10
Q

What kind of joint is the metacarpophalangeal joint?

A

-Hinge joint
-Great range of movement

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11
Q

What joint is the middle arrow pointing to?

A

Proximal interphalangeal joint (Pastern)

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12
Q

What kind of joint is the metacarpophalangeal joint?

A

Saddle

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13
Q

What joint is the bottom arrow pointing to?

A

Distal interphalangeal joint (coffin)

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14
Q

What type of joint is the distal interphalangeal joint?

A

Saddle

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15
Q

What do all 3 joints in this picture have in common?

A

-All have collateral ligaments (one medial, one lateral)

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16
Q

What 2 important things are located in the metacarpophalangeal joint (fetlock)?

A

-Palmar recess
-Dorsal recess

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17
Q

What structure of the metacarpophalangeal joint is indicated by the *?

A

Palmar recess

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18
Q

What are the boundaries of the palmar recess in the metacarpophalangeal joint?

A

-Dorsal: Metacarpal bone III
-Proximal: Heads of MT II & IV
-Palmar: Interrosseous ligament
-Distal: Proximal sesamoid bones

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19
Q

What is the blue arrow indicating in the metacarpophalangeal joint?

A

-Palmar recess

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20
Q

What is the green arrow indicating in the metacarpophalangeal joint?

A

-Dorsal recess

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21
Q

What is shown in red in this image?

A

-Palmar recess

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22
Q

What is circled in blue?

A

-Heads of metacarpal II & IV (also called buttons of splint bones)

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23
Q

Why is the palmar recess important in the metacarpophalangeal joint?

A

-You can access the joint through this recess

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24
Q

What joint is shown here?

A

Distal interphalangeal joint (coffin joint)

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25
Q

What is indicated by the green arrow?

A

Palmar recess

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26
Q

What is indicated by the blue arrow?

A

Dorsal recess

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27
Q

If you remove the skin from a horses thoracic leg, what is the first thing you will come across?

A

SDF & DDF muscles and tendons

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28
Q

What is the insertion of SDF m.?

A

-Flexor surfaces of proximal & middle phalanges

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29
Q

What is the insertion of DDF m.?

A

-Flexor surface of the distal phalanx

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30
Q

What is the muscle indicated in green?

A

SDF m.

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31
Q

What is the muscle indicated in red?

A

DDF m.

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32
Q

What is the blue arrow pointing to?

A

-Proximal accessory ligament (proximal check ligament)

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33
Q

What is the blue arrow with the star pointing to?

A

-Distal accessory ligament (distal check ligament)

34
Q

What important structure acts as a tunnel to allow the DDF tendon to pass through the SDF tendon so the DDF tendon can get to the distal phalanx? (Hint: picture)

A

Flexor manica

35
Q

What is indicated by number 2? (Hint: tendons removed)

A

Proximal scutum

36
Q

What is indicated by number 5? (Hint: tendons removed)

A

Middle scutum

37
Q

What is indicated by number 6? (Hint: tendons removed)

A

Distal scutum

38
Q

What does the proximal scutum do?

A

-Allows for flexor manica to glide in this area

39
Q

What does the middle scutum do?

A

-Allows to glide the final part of SDF as it reaches insertion

40
Q

What does the distal scutum do?

A

-Allow DDF tendon to glide between the bone and tendon

41
Q

What is indicated by the blue star?

A

DDF tendon

42
Q

What is indicated by the blue star?

A

SDF tendon

43
Q

What is indicated by the blue star?

A

Flexor manica (tunnel)

44
Q

What is indicated by the star?

A

Common digital extensor m.

45
Q

What is indicated by the blue star?

A

Lateral digital extensor m.

46
Q

What is indicated by the blue star?

A

Common digital extensor tendon

47
Q

What is indicated by the blue star?

A

Lateral digital extensor tendon

48
Q

What ligament is shown here?

A

Interosseous ligament (also called suspensory ligament)

49
Q

What is the name of the group of ligaments shown by the purple, yellow, and red marks?

A

-Distal sesamoid ligaments (attached to proximal sesamoid bones)

50
Q

What ligament is demonstrated by the purple shading?

A

-Straight distal sesamoid lig.
-Most superficial
-Goes from base to middle phalanx

51
Q

What is demonstrated by the yellow shading?

A

-Oblique distal sesamoid lig.
-Shaped like a “V”

52
Q

What is demonstrated by the red shading?

A

-Cruciate distal sesamoid lig.
-Deepest
-Very short

53
Q

What is this group of 3 ligaments called?

A

-Ungular cartilage ligaments

54
Q

What is indicated by the blue star?

A

-Chondrocompedalis lig.
-Goes from cartilage to proximal phalanx

55
Q

What is indicated by the blue star?

A

-Chondrocoronalis lig.
-Goes from cartilage to middle phalanx

56
Q

What is indicated by the blue star?

A

-Chondroungularis
-Goes from cartilage to distal phalanx

57
Q

What is indicated by the blue star?

A

-Palmar ligament (intersesamoidean ligament)

58
Q

What is indicated by the blue star? (Both arrows)

A

-Collateral sesamoid ligament (have a lateral & medial)
-Joins proximal sesamoid bone w/ proximal phalanx

59
Q

What is indicated by the blue star? (Both arrows)

A

-Short sesamoid ligament
-Holds bones together to make this joint
-Deep
-From base of sesamoid bone to proximal part of middle phalanx

60
Q

What is indicated by the blue star?

A

-Collateral sesamoid ligament (also called suspensory navicular lig.)
-Joins distal sesamoid bone w/ proximal phalanx

61
Q

What is indicated by the blue star?

A

-Impair sesamoid ligament (distal navicular lig.)
-Holds navicular bone w/ distal phalanx
-Very short, very powerful lig.

62
Q

What is the blue arrow pointing to? (Space)

A

-Palmar recess of interphalangeal joint

63
Q

What is the blue arrow pointing to? (space)

A

-Navicular bursa
-Space between navicular bone & DDF tendon

64
Q

What is indicated by the blue stars?

A

-Carpal retinaculas (extensor retinaculum & flexor retinaculum)

65
Q

What is number 2 indicating?

A

Flexor retinaculum

66
Q

What is number 1?

A

-Carpal tunnel

67
Q

What goes through number 1?

A

-Blood vessels
-Nerves
-DDF & SDF tendons

68
Q

What is indicated by the blue star?

A

-Palmar annular ligament of fetlock

69
Q

What is indicated by the blue star?

A

-Proximal digital annular ligament (“X” shaped)

70
Q

What is indicated by the blue star?

A

-Distal annular ligament

71
Q

What is different in the pelvic limb from the thoracic limb regarding the proximal accessory (check) ligament?

A

-Absent in the pelvic limb b/c instead SDF tendon inserts in the calcanean tuber

72
Q

What is different in the pelvic limb from the thoracic limb regarding the distal accessory (check) ligament?

A

-Thinner and sometimes absent in the pelvic limb

73
Q

What is different with the SDF tendon in the pelvic limb?

A

-Attaches to the calcanean tuber then continues distally

74
Q

What is different with the DDF tendon in the pelvic limb?

A

-Slides over the sustentaculum tali of the calcaneus

75
Q

How many limb zones are there for an equine ultrasound?

A

-7

76
Q

In what zone was this ultrasound performed in?

A

Zone 1A transverse

77
Q

What is indicated by the blue star?

A

Skin

78
Q

What is indicated by the blue star?

A

SDF tendon

79
Q

What is indicated by the blue star?

A

DDF tendon

80
Q

What is indicated by the blue star?

A

Distal accessory ligament of the deep digital flexor tendon

81
Q

What is indicated by the blue star?

A

Interosseous ligament

82
Q

What is indicated by the blue star?

A

Metacarpal bone III

2025 Anatomy II (11 decks)

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