Nerves, Vessels, Lymph nodes of the pelvic appendage

Question 1

Nerves of the pelvis appendage

Answer 1

1. Sciatic nerve
2. common fibular nerve
3. tibial nerve
4. obturator nerve
5. femoral nerve (&saphenous nerve)
6. cranial gluteal nerve
7. caudal gluteal nerve

Question 2

What does the sciatic nerve innervate?

Answer 2

• biceps femoris
• semitendinosus
• semimembranosus
• internal obturator
• gemelli
• quadratus femoris

Question 3

What does the femoral nerve innervate?

Answer 3

• cranial and caudal part of sartorius
• quadriceps femoris
• illiopsoas (also some lumbar spinal nerves)

Question 4

What does the obturator nerve innervate?

Answer 4

• gracilis
• pectineus
• adductor
• external obturator

Question 5

What does the cranial gluteal nerve innervate?

Answer 5

• tensor fascia latae (TFL)
• deep gluteal
• middle gluteal

Question 6

What does the caudal gluteal nerve innervate?

Answer 6

• superficial gluteal

Question 7

What does the fibular nerve innervates?

Answer 7

• cranial tibial
• long digital extensor
• fibularis longus

Question 8

What does the tibial nerve innervate?

Answer 8

• gastrocnemius
• superficial digital flexor
• deep digital flexor
• popliteus

Question 9

Nerves of lumbosacral plexus

Answer 9

Huge debate about what is and is not part of the lumbrosacral plexus

Some L1 to S3, some L3 to S3, some L4 to S2

In our class, think L4 to S2 because this area focuses on the muscles (not the nerves contributing to the skin)

Question 10

Plexus

Answer 10

Means braid. so if interconnecting and a part of the braid then it should be included when talking about the plexus

Question 11

Femoral nerve deficiency

Answer 11

Inability to extend the stifle results in the inability to bear weight on limb. There may also be a loss of sensation on the medial side of the limb (saphenous nerve)

Question 12

Obturator nerve paralysis

Answer 12

Effects GAPE muscles- GAP adductors so legs will abduct and can result in downed cow

Question 13

Tibial nerve damage

Answer 13

Affects the extensors of the tarsus and flexors of the digits. The tarsus drops and the animal cannot actively flex the digits

Question 14

Common fibular or low radial nerve damage

Answer 14

Effects digital extensors similar to low radial nerve paralysis in the front limb… results in knuckling over

Question 15

Main arterial highway to the hindpaw

Answer 15

Left ventricle –> aorta –> external iliac artery –> femoral artery –> popliteal artery –> cranial tibial artery –> dorsal pedal artery

Question 16

Saphenous artery highway

Answer 16

Secondary arterial highway

Good pulse point

Question 17

Satellite venous highway from hindpaw

Answer 17

Dorsal pedal vein –> cranial tibial vein –> popliteal vein –> femoral vein –> external iliac vein –> common iliac vein –> caudal vena cava

Question 18

Venous and arterial blood collection

Answer 18

Dog: lateral saphenous vein, dorsal pedal artery
Cat: medial saphenous vein, femoral artery,

Question 19

Lymph nodes near pelvic appendage

Answer 19

• Popliteal
• Superficial inguinal

Question 20

Femoral triangle

Answer 20

• sartorius
• pectineus
• adductor
• iliopsoas
• rectus femoris
• vastus medialis

Question 21

What passes through the femoral triangle?

Answer 21

• femoral artery and vein
• saphenous nerve
• lymphatics

Question 22

Femoral artery

Answer 22

the most common pulse point in dogs