Lecture 12 - Muscles

Question 1

What is the origin of tensor fasciae latae?

Answer 1

Tuber coxae; aponeurosis of middle gluteal m.

Question 2

What is the insertion of tensor fasciae latae?

Answer 2

Lateral femoral fascia

Question 3

What is the nerve of tensor fasciae latae?

Answer 3

Cranial gluteal n.

Question 4

What is the action of tensor fasciae latae?

Answer 4

Tense lateral femoral fascia; flex hip (advance); extend stifle (advance)

Question 5

What is the origin of gluteus medius?

Answer 5

Crest and gluteal surface of ilium

Question 6

What is the insertion of gluteus medius?

Answer 6

Greater trochanter

Question 7

What is the nerve of gluteus medius?

Answer 7

Cranial gluteal n.

Question 8

What is the action of gluteus medius?

Answer 8

Extend (retract) and abduct the hip; rotate the pelvic limb medially at the hip

Question 9

What is the origin of gluteus superficialis?

Answer 9

Lateral border of sacrum and first caudal vert.; sacrotuberous ligament; cranial dorsal iliac spine via deep gluteal fascia

Question 10

What is the insertion of gluteus superficialis?

Answer 10

Third trochanter

Question 11

What is the nerve of gluteus superficialis?

Answer 11

Caudal gluteal n.

Question 12

What is the action of gluteus superficialis?

Answer 12

Extend (retract) and abduct the hip

Question 13

What is the origin of gluteus profundus?

Answer 13

Body of the ilium; ischial spine

Question 14

What is the insertion of gluteus profundus?

Answer 14

Greater trochanter

Question 15

What is the nerve of gluteus profundus?

Answer 15

Cranial gluteal n.

Question 16

What is the action of gluteus profundus?

Answer 16

Extend (retract) and abduct the hip; rotate pelvic limb medially at the hip

Question 17

What is the origin of obturator internus?

Answer 17

symphysis pelvis and dorsal surface of ischium and pubis

Question 18

What is the insertion of obturator internus?

Answer 18

Trochanteric fossa

Question 19

What is the nerve of obturator internus?

Answer 19

Sciatic n.

Question 20

What is the action of obturator internus?

Answer 20

Rotate pelvis limb laterally at the hip

Question 21

What is the origin of obturator externus?

Answer 21

Ventral surface of pubis and ischium

Question 22

What is the insertion of obturator externus?

Answer 22

Trochanteric fossa

Question 23

What is the nerve of obturator externus?

Answer 23

Obturator n.

Question 24

What is the action of obturator externus?

Answer 24

Rotate pelvic limb medially at the hip

Question 25

What is the origin of Gemelli?

Answer 25

Ischial spine and lateral surface of ischium

Question 26

What is the insertion of Gemelli?

Answer 26

Trochanteric fossa of the femur

Question 27

What is the nerve of Gemelli?

Answer 27

Sciatic n.

Question 28

What is the action of Gemelli?

Answer 28

Rotate pelvic limb laterally at the hip

Question 29

What is the origin of quadratus femoris?

Answer 29

Ventral surface of caudal part of ischium

Question 30

What is the insertion of quadratus femoris?

Answer 30

Intertrochanteric crest and shaft of femur

Question 31

What is the nerve of quadratus femoris?

Answer 31

Sciatic n.

Question 32

What is the action of quadratus femoris?

Answer 32

Rotate pelvic limb laterally at the hip, extend the hip

Question 33

What is the origin of biceps femoris?

Answer 33

Sacrotuberous ligament and ischial tuberosity

Question 34

What is the insertion of biceps femoris?

Answer 34

1) Patella, patellar ligament, and ... 2) Subcutaneous part of tibal body 3) Tuber calcanei (look at slide for more indepth answer)

Question 35

What is the nerve of biceps femoris?

Answer 35

Sciatic n

Question 36

What is the action of biceps femoris?

Answer 36

Extend hip, stifle, and hock; caudal part of muscle flexes stifle

Question 37

What is the origin of semitendinosus?

Answer 37

Ischial tuberosity

Question 38

What is the insertion of semitendinosus?

Answer 38

Disto-cranial border of tibia; medial surface of body of tibia; tuber calcanei via crural fascia

Question 39

What is the nerve of semitendinosus?

Answer 39

Sciatic n.

Question 40

What is the action of semitendinosus?

Answer 40

Extend the hip; flex stifle; extend hock

Question 41

What is the origin of semimembranosus?

Answer 41

Ischial tuberosity

Question 42

What is the insertion of semimembranosus?

Answer 42

Distal medial lip of caudal rough surface of the femur and medial condyle of the tibia

Question 43

What is the nerve of semimembranosus?

Answer 43

Sciatic n.

Question 44

What is the action of semimembranosus?

Answer 44

Extend the hip; attachment of femur extends the stifle; attachment to tibia flexes or extends stifle depending on position of the limb

Question 45

What is the origin of sartorius?

Answer 45

cranial - iliac crest and thoracolumbar fascia | caudal - cranial ventral spine and ventral border of ilium

Question 46

What is the insertion of sartorius?

Answer 46

cranial - patella w/ rectus femoris | caudal - cranial border of tibia w/ gracilis

Question 47

What is the nerve of sartorius?

Answer 47

FEMORAL N.

Question 48

What is the action of sartorius?

Answer 48

Flex hip Cranial part - extend stifle Caudal part - flexes stifle

Question 49

What is the origin of pectineus?

Answer 49

Iliopubic eminence and pubic tubercle via prepubic tendon

Question 50

What is the insertion of pectineus?

Answer 50

Distal aspect of medial lip of caudal rough face of femur

Question 51

What is the nerve of pectineus?

Answer 51

Obturator n.

Question 52

What is the action of pectineus?

Answer 52

Adduct limb

Question 53

What is the origin of adductor?

Answer 53

Pelvic symphysis via symphysial tendon; adjacent part of ischial arch, ventral surfaces of ischium and pubis

Question 54

What is the insertion of adductor?

Answer 54

entire lateral lip of caudal rough face femur

Question 55

What is the nerve of adductor?

Answer 55

Obturator n.

Question 56

What is the action of adductor?

Answer 56

Adduct limb, extend hip

Question 57

What is the origin of gracilis?

Answer 57

Pelvic symphysis by means of symphysial tendon

Question 58

What is the insertion of gracilis?

Answer 58

Cranial border of the tibia | Tuber calcanei with semiteninosus

Question 59

What is the nerve of gracilis?

Answer 59

Obturator n.

Question 60

What is the action of gracilis?

Answer 60

Adduct the limb, flex stifle, and extend hip and hock