Zgross - Nerves Of The Pelvic Limb - Mt2

Front 1

What forms the lumbosacral plexus

Back 1

Formed by ventral branches of lumbar (L3-L7) and sacral (S1-S3) spinal nn.

Front 2

What nerve goes through the obturator foramen?

Back 2

The obturator n.

Front 3

What does femoral nerve innervate?

Back 3

Iliopsoas, the four heads of the quadriceps femoris.

Front 4

How do we test femoral n?

Back 4

Through the cutaneous branch of saphenous nerve.

Front 5

What vessels does the saphenous n. course with?

Back 5

The medial saphenous v. and saphenous a.

Front 6

Where does the saphenous nerve provide cutaneous innervation to?

Back 6

the distal medial aspect of the thigh, cranial and lateral aspects of the crus, and medial aspect of the pes

Front 7

How would dysfunction of the femoral nerve look like?

Back 7

Inability to extend the stifle joint or support weight on the pelvic limb

Reduced ability to rotate the thigh inward

Loss of sensation over the medial stifle region (saphenous n.)

Front 8

What muscles does obturator n. innervate?

Back 8

The adductors of the pelvic limb (adductor longus and magnus et brevis, pectineus m., and gracilis m.) and external obturator m.

Front 9

What is the cutaneous area of obturator nerve?

Back 9

Obturator doesn't have a cutaneous area.

Front 10

How does dysfunction of the obturator nerve present?

Back 10

Inability to adduct the hip and thigh.

Front 11

Where could we find the caudal cutaneous femoral nerve in the pelvic limb?

Back 11

Between biceps femoris and semitendinosus mm.

Front 12

Where is the cutaneous innervation of the caudal cutaneous femoral nerve of the pelvic limb?

Back 12

The caudolateral surface of the thigh

Front 13

What spinal nerves form the lumbosacral trunk?

Back 13

Ventral branches of L6, L7, S1 and maybe S2 spinal nn.

Front 14

Where is the cutaneous area of cranial gluteal nerve?

Back 14

Cranial gluteal nerve doesn't have one.

Front 15

What muscles does cranial gluteal nerve innervate?

How does dysfunction of cranial gluteal nerve present?

Back 15

Middle gluteal m.
Piriformis m.
Deep gluteal m.
Tensor fasciae latae m.

Dysfunction:
Decreased ability to extend the hip and rotate the thigh medially

Front 16

What muscle does caudal gluteal nerve innervate?

Back 16

Superficial gluteal m.

Dysfunction:
Decreased ability to extend the hip joint

Front 17

Where is the cutaneous area of caudal gluteal nerve?

Back 17

It doesn't have one.

Front 18

What muscles are innervated by sciatic nerve?

Back 18

Within the pelvis, innervates:
Internal obturator m.
Gemelli mm.
Quadratus femoris m.
Caudal crural abductor m.

Caudal to the hip, innervates:
Biceps femoris m.
Semimembranosus m.
Semitendinosus m.

Front 19

What are the cutaneous and motor branches of common peroneal (fibular) n.?

Back 19

Cutaneous – lateral cutaneous sural n.

Motor – innervation of the flexors of the hock and extensors of the digits and cutaneous sensory

Front 20

What are the cutaneous and motor branches of common tibial n.?

Back 20

Cutaneous – caudal cutaneous sural n.

Motor – innervation of the extensors of the hock and flexors of the digits & cutaneous sensory

Front 21

What specific nerve innervates Cows Love Purple (Cranial tibial m.
Long digital extensor m.
Peroneus longus m.)?

Back 21

Deep peroneal (fibular) n. off of the common peroneal n.

Front 22

What specific nerve innervates Lollipops (Lateral digital extensor m.
Peroneus brevis m.)?

Back 22

Superficial peroneal (fibular) n. off of the common peroneal n.

Front 23

What nerve provides sensory cutaneous innervation to the dorsal interdigital area between digits II and III?

Back 23

Deep peroneal n.

Front 24

How does peroneal nerve damage present.

Back 24

Hock tends to straighten and foot tends to knuckle due to inability to flex the hock and extend the digits.

Poor hock flexion on withdrawal reflex.

Loss of sensation over the craniolateral aspect of the crus (via lateral cutaneous sural n.) and dorsum of the hock and pes (via superficial peroneal n.)

Loss of sensory innervation to the area between digits II and III dorsally (via deep peroneal n.)

Front 25

What cutaneous area does caudal cutaneous sural n. innervate?

Back 25

Caudal surface of crus.

Front 26

What muscles does the tibial nerve innervate?

Back 26

Gastrocnemius m.
Superficial digital flexor m.
Popliteus m.
Deep digital flexor m.
Caudal tibial m.

Front 27

Where are the cutaneous areas of medial and lateral plantar nn.?

Back 27

there they are

Front 28

How does tibial nerve damage present?

Back 28

Hock is dropped due to inability to extend the hock

Inability to flex the digits

Loss of sensation over the caudolateral aspect of the crus (via caudal cutaneous sural n.) and plantar aspect of the hock and pes (via medial and lateral plantar nn.)

Front 29

What are the autonomous zones of the pelvic limb?

Back 29

there they are.

Front 30

What are the muscles of the muscular lacuna?

What are the vessels of the vascular lacuna?

Back 30

Muscular lacuna
Iliopsoas m.
Femoral n.

Vascular lacuna
Femoral a. and v.
Medial circumflex femoral a. and v.
Saphenous n.
Lymphatics