Pelvic Limb

Question 1

Biceps Femoris

Answer 1

** contributes to common calcanean tendon

O: sacrotuberous ligament and ischiatic tuberosity

I: Patella, patellar ligament, cranial border of the tibia via the fascia lata and crural fascia
- tuber calcanei via common calcanean tendon

A: Extend hip stifle and hock / can flex stifle when not bearing weight

Question 2

Semitendinosis

Answer 2

** contributor to common calcanean tendon

O: ischiatic tuberosity

I: Medial surface of tibial body , tuber calcanei via common calcanean tendon

A: extend hip, flex stifle, extend hock

Question 3

semimembranosis

Answer 3

O: ischiatic tuberosity

I: distal and medial aspect of the caudal femur and medial condyle of the tibia

A: Extend hip, extend or flex stifle depending on the limb position

Question 4

Sartorius

Answer 4

** caudal part form the cranial boxer of the femoral triangle

O: crest of ilium and thoracolumnar fascia. ventral border of ilium

I: patella and cranial border of the tibia

A: flex hip, extend stifle (weight bearing), flex stifle (not bearing weight)

Question 5

Gracilis

Answer 5

** contributor to common calcanean tendon

O: Pelvic symphysis via symphysial tendon

I: cranial border of tibia - tuber calcanei via common calcanean tendon

A: Adduct limb, flex stifle, extend hip and hock

Question 6

Pectineus

Answer 6

**caudal border of femoral triangle

O: pubis (prepubic tendon and iliopubic eminence)

I: distal end of caudomedial aspect of femur (medial lip of caudal rough surface)

A: adduct limb

Question 7

Adductor

Answer 7

O: Pelvic symphysis via sympysial tendon. ventral surface of pubis and ischium

I: caudolateral aspect of femur (entire lateral lip of caudal rough surface of femur)

A: adduct limb, extend hip

Question 8

tensor fasciae latae

Answer 8

O: tuber coxae. Aponeurosis of middle gluteal m.

I: lateral femoral fascia (fascia lata)

A: tense fascia lata. flex hip, extend stifle

Question 9

superficial gluteal

Answer 9

O: sacrotuberous ligament. deep gluteal fascia

I: third trochanter of the femur

A: extend hip. abduct limb

Question 10

middle gluteal

Answer 10

**piriformis muscle is considered part of the middle gluteal

O: crest and gluteal surface of ilium

I: greater trochanter of femur

A: extend hip. abduct hip. rotate pelvic limb medially

Question 11

deep gluteal

Answer 11

O: body of ilium, ischiatic spine

I: greater trochanter of the femur

A: extend hip. abduct hip. rotate pelvic limb medially

Question 12

Internal Obturator

Answer 12

**has a subtendinous bursa and the tendon passes over the lesser ischiatic notch

O:Dorsal surface of ischium and pubis. dorsal pelvic symphysis

I: trochanteric fossa of the femur

A: rotate the pelvic limb laterally

Question 13

Gemelli

Answer 13

O: lateral surface of the ischium. ventral to the lesser ischiatic notch

I: trochanteric fossa of the femur

A: rotate the pelvic limb laterally

Question 14

Quadratus femoris

Answer 14

O: ventral surface of caudal ischium

I: intertrochanteric crest of the femur

A: rotate pelvic limb laterally, extend hip

Question 15

External obturator

Answer 15

O: ventral surface of pubis and ischium

I: trochanteric fossa of the femur

A: rotate the pelvic limb laterally

Question 16

Quadriceps femoris

1. rectus femoris
2. vastus lateralis
3. vastus intermedius
4. vastus medialis

Answer 16

O: ilium (rectus femoris) . proximal aspect of femur

I: tibial tuberosity via patellar ligament

A: flex hip (rectus femoris). extend stifle (all heads)

Question 17

iliopsoas

Answer 17

**formed by muscles of psoas major and iliacus

O: ventral aspect of lumbar vertebrae. cranioventral ilium

I: lesser trochanter of the femur

A: flex hip

Question 18

cranial tibial

Answer 18

** tendon is held down by the crural extensor retinaculum

O: proximal and lateral aspect of the tibia near the extensor groove

I: proximal plantar surface of metatarsals I and II

A: flex tarsus. rotate paw laterally so plantar surface faces medially

Question 19

long digital extensor

Answer 19

** held down by both the crural extensor retaniculum and the tarsal extensor retinaculum

O: extensor fossa of the femur

I: extensor processes of distal phalanges digits II-V

A: extend digits. flex tarsus

Question 20

fibularis longus

Answer 20

O: lateral collateral ligament. proximal aspect of the tibia and fibula

I: tarsal bone IV - plantar aspect of proximal ends of metatarsals

A:flex tarsus. rotate paw medially so plantar surface faces laterally

Question 21

gastrocnemius

Answer 21

**each of the two heads contains a sesamoid bone (fabellae) in their tendons of origin

O: medial and lateral supracondylar tuberosities of the femur

I: tuber calcanei

A: extend tarsus. flex stifle

Question 22

superficial digital flexor

Answer 22

O: lateral supracondylar tuberosity of the femur

I: tuber calcanei. plantar aspect of the base of the middle phalanx of digits II-V

A: flex stifle. extend tarsus. flex digits

Question 23

deep digital flexor

1. lateral digital flexor
2. medial digital flexor

Answer 23

O: proximal tibia and fibula and adjacent interosseus membrane between the two

I: plantar aspect of the base of the distal phalanx of digits I-V

A: flex digits. extend tarsus

Question 24

popliteus

Answer 24

O: lateral condyle of femur

I: proximal and caudal aspect of the tibia

A: Flex stifle. rotate leg (crus) medially