Pelvic Limb Muscles

Question 1

what is the innervation and action of the tensor fascia latae?

Answer 1

cranial gluteal
flex hip joint, protract limb, extend stifle

Question 2

what is the innervation and action of the superficial gluteal?

Answer 2

cranial and caudal gluteal
flex (cranial head)/extend (caudal head) hip joint, protract and abduct limb
gluteobiceps in ruminants and sometimes pig

Question 3

what is the innervation and action of the middle gluteal?

Answer 3

cranial and caudal gluteal
extend hip, abduct limb

Question 4

what is the innervation of the accessory gluteal?

Answer 4

cranial gluteal

Question 5

what is the innervation and action of the deep gluteal?

Answer 5

cranial gluteal
abduct and rotate limb

Question 6

what is the innervation and action of the biceps femoris?

Answer 6

caudal gluteal and sciatic
extend hip and stifle, flex stifle, extend hock, abduct limb

Question 7

what is the innervation and action of the semitendinosus?

Answer 7

caudal gluteal and sciatic
weight bearing: extend hip, stifle, hock
non-weightbearing: flex stifle, retract and abduct limb

Question 8

what is the innervation and action of the semimembranosus?

Answer 8

caudal gluteal and sciatic
weightbearing: extend hip and stifle
non-weightbearing: retracts, adducts, rotates limb inward

Question 9

what is the innervation and action of the internal obturator?

Answer 9

muscular branch sciatic
rotates thigh outward

Question 10

what is the innervation and action of the external obturator?

Answer 10

obturator
rotates thigh outward, adducts limb

Question 11

what is the innervation and action of the gracilis?

Answer 11

obturator
adduct limb, extend stifle

Question 12

what is the innervation and action of the adductor?

Answer 12

obturator
adduct and retract limb

Question 13

what is the innervation and action of the pectineus?

Answer 13

obturator and femoral
adduct limb, flex hip

Question 14

what is the innervation and action of the sartorius?

Answer 14

femoral and saphenous
flex hip, protract and adduct limb

Question 15

what is the innervation of the quadriceps femoris?

Answer 15

femoral

Question 16

what is the action of the vastus lateralis?

Answer 16

flex hip joint, extend stifle

Question 17

what is the action of the vastus medialis and vastus intermedius?

Answer 17

extend and stabilize stifle

Question 18

what is the innervation and action of the popliteus?

Answer 18

tibial
flex stifle

Question 19

what is the innervation and action of the gastrocnemius?

Answer 19

tibial
extend hock, flex stifle

Question 20

what is the innervation and action of the soleus?

Answer 20

tibial
rudimentary, might extend hock

Question 21

what is the innervation and action of the superficial digital flexor?

Answer 21

tibial
mainly tendinous, part of passive stay apparatus, support fetlock an pastern joints

Question 22

what is the innervation and action of the deep digital flexor (lateral, tibialis caudalis, medial)?

Answer 22

tibial
extend hock, flex digits

Question 23

what is the innervation and action of the cranial tibial?

Answer 23

fibular (perineal)
flex hock

Question 24

what is the innervation and action of the fibularis tertius?

Answer 24

fibular (perineal)
no real action in horse
extend stifle and flex tarsal

Question 25

what is the innervation and action of the long digital extensor?

Answer 25

fibular (perineal)
extend digits, flex hock

Question 26

what is the innervation and action of the lateral digital extensor?

Answer 26

fibular (perineal)
extend digits, flex hock

Question 27

what is the innervation and action of the interosseous?

Answer 27

tibial
counteracts overextension of fetlock

Question 28

what muscle(s) of the lower limb (mainly below stifle) have action on the stifle?

Answer 28

gastrocnemius
fibularis tertius
fibularis longus