Pelvic Limb Vessels & Nerves

Question 1

What are the main branches that supply the pelvic limb?

Answer 1

Aorta
Internal Iliac a.
External iliac a.
Femoral a.
Popliteal a.
Cranial tibial a.

Question 2

Describe the branches of the internal iliac a.

Answer 2

First branch internal pudendal a -> gives rise to umbilical and vaginal/prostatic a.
Then becomes caudal gluteal a -> gives rise to iliolumbar, cranial gluteal, lateral caudal, and dorsal perineal a.

Question 3

What artery branches off from the aorta and runs in between the internal and external iliac arteries?

Answer 3

Median sacral a.

Question 4

What is the name of the branch that comes from the external iliac a.

Answer 4

Deep femoral a.

Question 5

What are the branch(s) of the deep femoral a.

Answer 5

Pudendoepigastric trunk -> gives rise to external pudendal a. and caudal epigastric a.
Medial circumflex iliac a (continuation of external iliac a.)

Question 6

What must the external iliac a pass through before becoming the femoral a.?

Answer 6

Vascular lacuna

Question 7

Name the branches of the Femoral a?

Answer 7

Superficial circumflex iliac a.
Lateral circumflex humeral a.
Proximal caudal femoral a.
Saphenous a.
Descending genicular a.
Middle caudal femoral a.
Distal caudal femoral a. (Last branch)

Question 8

What does the femoral a continue as?

Answer 8

Popliteal a.
Continuation of the femoral a.
Goes between 2 heads of gastrocnemius m. Over the flexor surface of the stifle and through the popliteal notch of tibia

Question 9

What is the continuation of popliteal a.?

Answer 9

Cranial tibial a. (terminal branch)
caudal tibial a.

Question 10

What are the branches of the cranial tibial a?

Answer 10

Dorsal pedal a
Arcuate a
Dorsal and plantar metatarsal aa

Question 11

What does the saphenous a branch into?

Answer 11

dorsal and plantar common digital aa

Question 12

what muscles does the external iliac a supply?

Answer 12

Adductor m, vastus medialis m., obturator mm., semimembranosus m., hip joint capsule

Question 13

What muscles does the distal caudal femoral a supply?

Answer 13

Biceps femoris,
Semimembranosus
Semitendinosus m
Gastrocnemius m
Digital flexor mm

Question 14

What muscles does the popliteal a. Supply?

Answer 14

Stifle
Gastrocnemius
Popliteus

Question 15

What muscles does the cranial tibial a supply?

Answer 15

Long digital extensor and cranial tibial mm

Question 16

What does the dorsal pedal a supply?

Answer 16

Tarsus

Question 17

What two arteries can be used to take a pulse in the pelvic limb?

Answer 17

Femoral a. And dorsal pedal a.

Question 18

Describe the flow of blood into the lateral saphenous v?

Answer 18

Dorsal common digital vv
Plantar superficial arch
Lateral saphenous v
cranial and caudal branches
Distal caudal femoral
Femoral v

Question 19

Describe the flow of blood into the medial saphenous v?

Answer 19

Common digital vv (dorsal and plantar)
Cranial and caudal branches
Medial saphenous
Femoral v.

Question 20

What structures come through the muscular lacuna?

Answer 20

Iliopsoas m
Femoral n

Question 21

What structures come through the vascular lacuna?

Answer 21

Femoral a and v
Medial circumflex femoral a and v
Saphenous n
Lymphatics

Question 22

What is the vascular lacuna more commonly called?

Answer 22

Femoral ring?

Question 23

Where does the lumbosacral plexus originate from?

Answer 23

L4-S3

Question 24

What is the name of the location where the lumbosacral plexus originates?

Answer 24

Lumbar intumescence

Question 25

Name the nerve of the lumbosacral plexus that is motor only?

Answer 25

Obturator n. Cranial and caudal gluteal n

Question 26

What ate the nerves of the lumbosacral plexus that are both motor and sensory?

Answer 26

Genitofemoral Femoral Lumbosacral trunk Sciatic nerve Common fibular (deep and superficial fibular) tibial n

Question 27

What are the sensory branches of the femoral n.?

Answer 27

Caudal cutaneous femoral Saphenous

Question 28

What are the branches of the lumbosacral trunk?

Answer 28

Caudal gluteal n Cranial gluteal n Sciatic n

Question 29

What is the sensory innervation of the sciatic n?

Answer 29

Lateral and caudal cutaneous sural nn.

Question 30

What are the branches of the common fibular n?

Answer 30

Deep fibular n. Superficial fibular n.

Question 31

What is the sensory innervation of the common fibular n?

Answer 31

Deep and superficial peroneal nn

Question 32

what is the sensory innervation of the tibial n called?

Answer 32

Medial and lateral plantar nn

Question 33

What muscle(s) do the genitofemoral n innervate?

Answer 33

Cremaster m (in males only)

Question 34

What muscle(s) do the obturator n innervate?

Answer 34

External obturator m Pectineus m Gracilis m Adductors m

Question 35

What muscle(s) do the Femoral n innervate?

Answer 35

Iliopsoas m Quadriceps m Sartorius m

Question 36

What muscle(s) do the caudal gluteal n innervate?

Answer 36

Superficial gluteal m

Question 37

What muscle(s) do the cranial gluteal n innervate?

Answer 37

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

Question 38

What muscle(s) do the sciatic n innervate?

Answer 38

Within pelvis: -internal obturator m -gemelli m -quadratus femoris m Hamstring: -biceps femoris -semimbranosus -semitendinosus

Question 39

What muscle(s) do the Deep fibular n innervate?

Answer 39

Cranial tibial m Long digital extensor m Fibularis longus m

Question 40

What muscle(s) do the superficial fibular n innervate?

Answer 40

Lateral digital extensor m Fibularis brevis m

Question 41

What muscle(s) do the tibial n innervate?

Answer 41

Gastrocnemius m SDF m DDFm Popliteus m

Question 42

What actions would be effected if there was damage to the obturator n?

Answer 42

Adduction of pelvic limb

Question 43

What actions would be effected if there was damage to the femoral n?

Answer 43

Flexion of coxal jt Flexion and extension of genual jt

Question 44

What actions would be effected if there was damage to the caudal gluteal n?

Answer 44

Extension of the coxal jt Abduction of the pelvic limb

Question 45

What actions would be effected if there was damage to the cranial gluteal n?

Answer 45

Extension and Flexion of coxal joint, extension of genual jt., abduction and medial rotation of limb

Question 46

What actions would be effected if there was damage to the sciatic n?

Answer 46

Lateral rotation of limb Extension of coxal jt Flexion of genual jt Extension of tarsocrural jt

Question 47

What actions would be effected if there was damage to the Common fibular n?

Answer 47

Flexion tarsocrural jt and extension of the digits

Question 48

What actions would be effected if there was damage to the tibial n?

Answer 48

Extension of the tarsocrural jt and Flexion of the digits

Question 49

AZ of the caudal cutaneous femoral n?

Answer 49

Caudal proximal level of pelvic limb

Question 50

AZ of saphenous n?

Answer 50

Medial femoral, genual tibial and pes regions

Question 51

AZ zone of sciatic nerve?

Answer 51

Lateral and caudal cutaneous sural nn lateral caudal aspect of mid pelvic limb

Question 52

AZ of common fibular n?

Answer 52

Called deep and superficial peroneal nn? Lateral and cranial aspect of distal pelvic limb

Question 53

AZ of tibial n?

Answer 53

Medial and lateral plantar nn Plantar surface of pes

Question 54

AZ of genitofemoral n?

Answer 54

Skin in inguinal region

Question 55

AZ zone of lateral cutaneous femoral n?

Answer 55

Lateral aspect of lumbar, coaxial jt, and genual region