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CVM: 720 Anatomy II > Lecture 6: Distal limb vessels > Flashcards

Lecture 6: Distal limb vessels Flashcards

1
Q

Brachial plexus goes from C6- __

A

T2

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2
Q

list the nerves for the thoracic limb Dr.P said we needed to focus on

A
  • Suprascapular
  • Musculocutaneous
  • Median
  • Radial
  • Ulnar
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3
Q

what muscles are innervated by the Suprascapular n.

A

supraspinatus m.
infraspinatus m.

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4
Q

what is “sweeny” or “dancing” shoulder

A
  • Damage to suprascapular nerve
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5
Q

Damage to suprascapular nerve not uncommon in horses.

why?

A

Horses are very strong and horses DONT have an acromion so their nerve is more exposed

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6
Q

“Sweeny” Shoulder (damage to the suprascapular nerve) results in atrophy of

A

supra and infraspinatus, shoulder
instability, and shoulder “slip”

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7
Q

What does the Subscapular n. supply

A

subscapularis m.

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8
Q

what does the Axillary n. supply

A

located between the subscapular m. and teres major

supplies the muscles of the shoulder

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9
Q

what does the Musculocutaneous n. supply

A

innervates the flexors of shoulder and some part of distal limb

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10
Q

what does the median n. innervate

A

MAIN innervation of palmar side of hand

runs with brachial and median a. moved digital and carpal flexor

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11
Q

what does the radial nerve innervate

A

all the extensors (triceps, extensor or carpal/digits)

located between the heads of the triceps

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12
Q

what does the ulnar nerve innervate

A

lateral side; flexors of carpus and digits

**share root with median n.

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13
Q

identify the nerve

A
  • Suprascapular n
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14
Q

identify the nerve

A
  • Subscapular
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15
Q

identify the nerve

A

axillary n.

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16
Q

identify the nerve

A
  • Musculocutaneous n.
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17
Q

identify the nerve

A

median nerve

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18
Q
A
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19
Q

what nerve is this

A

radial nerve

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20
Q

identify the nerve

A

ulnar n.

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21
Q

what nerve is affected here

A

Radial nerve; cannot extend carpus

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22
Q

EXAM Q:

name 2 muscles that extend the carpus

A

extensor carpi radialis
common digital extensor

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23
Q

identify the autonomous zones

A
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24
Q

Cutaneous Innervation of the fore digit: Musculocutaneous n.

A

Craniomedial antebrachium

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25
Q

Cutaneous Innervation of the fore digit: Ulnar n.

A

Caudal antebrachium

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26
Q

Cutaneous Innervation of the fore digit: Median n.

A

Medial antebrachium

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27
Q

What does the Ulnar n. turn into (2)

A

Dorsal branch n.
Lateral Palmar n. (with the communicating branch of the median n.)

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28
Q

What does the Median n. turn into (2)

A

Medial Palmar n.
Lateral Palmar n. (with the ulnar n.)

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29
Q

what does the Musculocutaneous n. turn into

A

Medial cutaneous antebrachial n.

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30
Q

What does the Lateral Palmar n. split into

A

Lateral and Medial Palmar metacarpal

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31
Q

what does the medial palmar n. turn into

A

medial digital palmar n.

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32
Q

where are the Lateral and Medial Palmar metacarpal n. located

A

small and deep between Metacarpal 3 and interosseous ligament

33
Q

What are the main arteries we need to focus on for the thoracic limb

A

1.Axillary Artery
2. Brachial Artery
3. Median Artery

34
Q

From the median artery, what does it divide into

A
35
Q

what is the main blood supply to the manus

A

Median a.

36
Q

what does the radial artery divide into

A
37
Q

T/F the dorsal blood supply of the manus is BETTER in comparison to the palmar aspect of the manus

A

False; poorer

38
Q

Pelvic Limb Innervation: LS Plexus L4-___

A

S2

39
Q

Pelvic Limb Innervation

List the important nerves

A
  • Cranial and caudal gluteal
  • Femoral–Saphenous
  • Obturator
  • Ischiatic (Sciatic) (2)
    1. Tibial
    2. Common Fibularis (Peroneal) (Superficial/Deep)
40
Q

What does the femoral n. supply

A

Supplies the quadriceps

41
Q

Does the saphenous n. run medially or laterally

A

medially

42
Q

what does the obturator n. innervate

A

Adductor muscles(gracilis, adductor, pectineus)

**remember sartorius is innervated by saphenous n.

43
Q

what does the sciatic n divide into

A

Tibial n.
Common fibularis (Peroneal)

44
Q

What are the two branches of the Common fibularis (Peroneal)

A

Superficial and deep

45
Q

What area of the leg does the Tibial n (of the Sciatic) innervate

A

plantar part of the leg
(Flex toe and extend hock)

46
Q

What area of the leg does the Common fibularis n (of the Sciatic) innervate

A

dorsal part of the leg (extend toe and flex hock)

47
Q

identify the nerve

A

Femoral
* Saphenous

48
Q

identify the nerve

A

Obturator

49
Q

identify the nerve and artery

A

Obturator n. and a.

50
Q

identify nerve

A

Sciatic
* Tibial
* Common fibularis (Peroneal)

51
Q

identify the autonomous and cutaneous zones

A
52
Q

Cutaneous innervation of the hind digit:
what nerve innervates the Craniomedial tibia

A

Saphenous n.

53
Q

what is the cutaneous innervation of the Fibular n.

A

Cranial tibia

54
Q

what is the cutaneous innervation of the Tibial n.

A

Caudal tibia

55
Q

Cutaneous innervation of the hind digit

what is the MAIN innervation on the plantar side

A

tibial n.

56
Q

Common fibular n. divides into the Superficial and Deep fibular n.

what does the Superficial and Deep fibular divide into?

A
57
Q

what does the tibial n. split into

A
  1. Caudal Cutaneous Sural n.
  2. Lateral Plantar n.
  3. Medial Plantar n.
58
Q

what does the Lateral Plantar n. (off of the tibial n.) turn into

A
59
Q

From the Femoral a. what does it turn into

A

Saphenous
Popliteal (branch off into cranial tibial)
Caudal tibial
Lateral and medial plantar

60
Q

What is the deep plantar arch a branch of

A

Medial plantar a.

61
Q

Deep plantar arch divides into (2)

A

Lateral plantar metatarsal a.
Medial plantar metatarsal a.

62
Q

The Medial plantar metatarsal a. divides into

A

Medial digital plantar
Lateral digital plantar

63
Q

Cranial tibial turns into (2)

A

Dorsal pedal a.
Dorsal metatarsal a.

64
Q

Palmar Digital Nerve Block

what nerves are involved?

A

Palmar Digital Nerves

65
Q

Palmar Digital Nerve Block
* Anesthetizes:

A
  • Sole
  • Navicular Apparatus
  • Coffin joint
  • Distal flexor tendon sheath
  • Distal sesamoidean ligaments
  • Loss of skin sensation at the
    heel
66
Q

Abaxial Sesamoid Nerve Block

Nerve involved

A
  • Nerves: Palmar Digital Nerves
67
Q

Abaxial Sesamoid Nerve Block

  • Anesthetizes:
A
68
Q

Low 4-Point Block

what nerves are involved

A
  • Palmar metacarpal/metatarsal nerves
    (adjacent to splint)
  • Palmar nerves (between suspensory and DDFT)
69
Q

Low 4-Point Block
Anesthetizes:

A

all parts from the Palmar and Abaxial nerve block

70
Q

Low 4 Point Block Hind limb

T/F Will not reliably anesthetize the skin
dorsally

A

True

**Performed the same as the forelimb

71
Q

Low 4 Point Block Hind limb

what is this kind of nerve block helpful with vs. not helpful with

A
  • Important for suturing a laceration
  • Less important for a lameness work up
72
Q

Low 4 Point Block Hind limb

Can do a _____ring block to anesthetize the skin

A

dorsal

73
Q

High 4 Point Block Front Limb

what nerves are involved
Anesthetizes:

A

Nerves:
* Medial and lateral palmar nerves
* Medial and lateral palmar metacarpal
nerves

74
Q

High 4 (6) Point Block Hind Limb
what nerves are involved?
Anesthetizes:

A

Nerves:
* Medial and lateral plantar nerves
* Medial and lateral plantar metatarsal nerves
* Dorsal metatarsal nerves

75
Q
A
76
Q
A
77
Q
A
78
Q

where do you insert the needle for a palmar digital nerve block

A

over the neurovascular bundle (proximal border of collateral cartilage)

79
Q

where do you insert the needle for a abaxial sesamoid nerve block

A

at abaxial surface of sesamoid, go distally

CVM: 720 Anatomy II (17 decks)

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