Lecture 6: Nerve Supply of the Pelvic Limb Flashcards Preview

Undeleted > Lecture 6: Nerve Supply of the Pelvic Limb > Flashcards

Flashcards in Lecture 6: Nerve Supply of the Pelvic Limb Deck (21):
0

the lumbosacral plexus

intermingling of the ventral primary branches of spinal nerves L4-S4

1

femoral n.

spinal nerve origin: L4-L6

2

obturator n. spinal nerve origin:

L4-L6

3

cranial gluteal spinal nerve origin

L6-S1

4

caudal gluteal spinal nerve origin

S1-S2

5

caudal cutaneous femoral spinal nerve origin

S1-S2

6

sciatic n. (tibial + common peroneal) spinal nerve origin

L6-S2

7

pudendal spinal nerve origin

S2-S4

8

obturator n.

- strictly MUSCULAR
M: adductors of the hip (ext. obt., pectineus, adductor, gracilis)
S: no skin innervation
J: part of hip and stifle joint
clinical signs: non-compensated abduction of the limb. the cow will go into a split

9

femoral n.

- L4-L6
- MIXED nerve
- in femoral triangle
- M: flexors of hip (iliopsoas, rectus femoris) and extensors of stifle (quadriceps femoris)
- S/J: supplies saphenous, skin of MEDIAL thigh, medial crus and dorsomedial skin of tarsus and metatarsus. part of hip and stifle joints
- cut = collapse of stifle, inability to stand because of quad fem. paralysis

10

caudal gluteal n.

M: supplies extensors of hip (biceps femoris, gluteus medius, semitendinosus) and abductors of the hip
S/J: none
clinical signs: a little alteration in gait

11

sciatic n.

MIXED
M: supplies most hindlimb muscles including flexors of the stifle (biceps femoris, semitendinosus, popliteus, gastrocnemius), extensors and flexors of the tarsus and extensors and flexors of the digit
S/J: almost all skin from the stifle down to the hoof (except a medial strip innervated by the saphenous n.)
clinical signs: poor limb flexion, stifle extended, tarsus extended, weight born on dorsal surface of digit with fetlock overflexed, analgesia of lateral limb and entire foot

12

Tibial n.

M: supplies flexors of the stifle (popliteus, gastrocnemius), extensors of the tarsus (gastronemius, soleus, superficial and deep digital flexors) and flexors of the digit (superficial and deep digital flexor)
S/J: caudolateral skin from stifle to hoof. supplies the stifle joint, plantar aspects of fetlock, pastern and coffin joints and navicular bursa
clinical signs: hypermetric gait with "dropped hock" (hyperflexion of tarsus at rest), inability to flex digit, analgesia of plantar metarsus and digit

13

common peroneal nerve

M: supplies flexors of the tarsus (long and lateral digital extensors, tibialis cranialis) and extensors of the digit (long and lateral digital extensors)
S/J: skin over dorsolateral surface of the crus and pes, tarsal joints, fetlock joint and dorsal portions of pastern and coffin joints
clinical signs: inability to flex the tarsus and extend the digit, will show hyperextension of the hock and hyperflexion of the digit, fetlock knuckles during walking and toe is dragged. analgesia of dorsolateral pes from the tarsus to the fetlock.

14

cranial gluteal n.

M: supplies heads of gluteal muscle (abductor of the hip) and tensor fasciae latae muscle
S/J: no skin, part of hip joint
clinical signs: little alteration in gait, atrophy of middle glute.

15

joint innervation to the hip joint

femoral, obturator, cranial gluteal and sciatic nerves

16

joint innervation of the stifle joint

femoral
obturator
tibial

17

joint innervation of the tarsal joint

deep peroneal nerve

18

joint innervation of the fetlock joint

med and lat dorsal metatarsal nerves, med and lat plantar nerves

19

pastern and coffin joints

plantar aspect - medial and lateral plantar digital nerves
dorsal aspect - medial and lateral dorsal digital nerves

20

navicular bursa

medial and lateral plantar digital nerves

Decks in Undeleted Class (134):