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16 Cards in this Set

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Three femoral heads of the quadriceps group

Vastus medialis m.


O: Proximal end of the craniomedial femur.




Vastus intermedius m.


O: Lateral part of the proximal 1/4 of the femur.




Vastus lateralis m.


O: Proximal lateral femur.




All 3 femoral heads:




I: Tibial tuberosity




A: Extend the stifle joint.




N: Femoral nerve

Rectus femoris m.

O: Ilium, cranial to the acetabulum.




I: Tibial tuberosity




A: Extend the stifle joint and flex the hip joint (the only head of the quads to do this)




N: Femoral nerve

Semimembranosus m.

O: Ischiatic tuberosity




I: Distal medial femur and proximal end of tibia.




A: Extend the hip joint.




N: Sciatic nerve

Semimembranosus m.

A: The part inserting on the tibia can flex or extend the stifle, depending upon the position of the limb.

Semitendinosus m.

O: Ischiatic tuberosity




I: Medial surface of the body of the tibia and tuber calcanei via the crural fascia




A: Extend the hip joint, flex the stifle joint, extend the tarsal joint.




N: Sciatic nerve



Semitendinosus m.

A: Extend the hip joint, flex the stifle joint, extend the tarsal joint.

Gracilis m.

O: Pubic symphysis




I: Cranial border of the tibia and, with the semitendinosus muscle, the tuber calcaneus.




A: Adduct the limb, flex the stifle joint, extend the hip and tarsal joints.

Tensor fasciae latae

O: Tuber coxae and adjacent ilium.




I: Lateral femoral fascia




A: Tense the femoral fascia, flex the hip joint, extend the stifle joint.

Sartorius m.

2 heads




O: Cranial head: Medial crest of the ilium.


Caudal head: Cranial ventral iliac spine.




I: Cranial: Patella, with the quadriceps muscles


Caudal: Cranial border of the tibia, with the gracilis m.




A: Flex the hip (both heads)


Cranial: also extends the stifle joint


Caudal: also flexes the stifle joint.




N: Femoral nerve

Biceps femoris m.

O: Sacrotuberous ligament and ischiatic tuberosity




I: By means of fascia lata, to patella, patellar ligament and the cranial border of the tibia; by means of crural fascia, the tuber calcanei.




A: Extend the hip, stifle and tarsal joints. Caudal part flexes the stifle joint.




N: Sciatic nerve

Long digital extensor m.

O: Extensor fossa of the femur




I: Extensor processes of distal phalanges of digits II-V




A: Extend digits and flex the tarsal joint.

Peroneus longus m.

O: Lateral condyle of tibia, proximal end of fibula.




I: 4th tarsal bone, plantar aspect of base of the metatarsals.




A: Flex tarsal joint and rotate dorsum of paw medially, so plantar surface faces laterally.

Deep digital flexor m.

O: Plantar aspect of proximal 2/3 of tibia and proximal 1/2 of fibula.




I: Plantar surface of base of each of the distal


phalanges.




A: Flex digits and extend the tarsal joint.

Cranial tibial m.

O: Lateral edge of cranial tibial border.




I: Plantar surface of base of metatarsals I and II, with peroneus longus m.




A: Flex tarsal joint and rotate dorsum of paw laterally, so plantar aspect of paw faces medially.

Superficial digital flexor m.

O: Distal caudal femur




I: Tuber calcaneus (with the calcaneal tendon) and bases of middle phalanges of digits II-V




A: Flex the proximal two digital joints of the four principal digits; flex the stifle joint, extend the tarsal joint.

Gastrocnemius m.

O: Medial and lateral supracondylar tuberosities of femur, over the fabellae.




I: Proximal dorsal surface of tuber calcaneus.




A: Extend tarsal joint, flex stifle joint.