Cranial muscles of thigh

Question 1

Cranial muscles of thigh

Answer 1

m. sartorius cran et caud
m. tensor fascia lata
m. quadriceps femoris (m.rectus femoris, vastus med, intermed. & lat.)

Question 2

m. sartorius cran et caud

Answer 2

In dogs it has a pars cranialis and pars caudalis.
Origin: iliac crest, cranial ventral iliac spine, thoracolumbar fascia

Insertion: radiating into fascia lata and crural fascia, cranial part inserts above stifle joint, caudal part inserts below stifle joint (the latter medially reaches tibial crest)

Action: flexes hip, extends or flexes stifle(depending on which part contracts more)

Question 3

M. quadriceps femoris

Answer 3

It has four muscle bellies.
Origin: m.rectus femoris from body of ilium(area m.recti femoris medialis et lat.), the three vastus proximally on femur: vastus lateralis from its craniolateral, vastus medialis from its craniomedial and vastus intermedius from its cranial surface

Insertion: patella, and by means of patellar ligament on tibia ltuberosity

Action: strongest extensor of stifle joint; m.rectus femoris also flexes hip

Question 4

M. tensor fasciae latae

Answer 4

Origin: tuber coxae(cranial ventral iliac spine and spina alaris)

Insertion:radiates into fascia lata and fascia cruris. Its superficial fascial layer
covers thigh, deep fascial layer surrounds m. quadriceps femoris and attaches to femur

Action: tenses fascia lata, flexes hip and extends stifle