Flashcards in Anterior and Middle Thigh (Lecture) Deck (85)
In what direction do the upper and lower limbs rotate during development?
laterally and medially respectively
Inferiorly, the fascia lata is continuous with what?
cural fascia of the leg
What is the lateral thickening of the fascia lata called?
What muscles have a conjoint aponeurosis that forms the tensor fascia lata and gluteus maximus muscles?
What specialized fascia overlies the origin of the gluteus medius muscle?
What role does the fascia lata play in making sure that blood from the legs is returned to the heart?
It prevents muscles from bulging outwards so that they squeeze the deep veins of the leg that are under the fascia to return blood to the heart
What is the role of perforating veins?
They connect the superficial an deep veins of the leg
Why are perforating veins important for getting blood back to the heart?
They move blood from superficial veins (great saphenous and lesser saphenous) into the deeper femoral vein which is under the fascia lata and is compressed by muscles moving the blood towards the heart
The great saphenous vein carries blood from __________ to ____________?
Dorsal venous arch on the foot to the femoral vein in the femoral triangle
What two veins join to create the great saphenous vein?
dorsal vein of the great toe and the dorsal veinous arch
What two structures merge to form the small saphenous vein?
dorsal vein on the small toe and the dorsal venous arch
What happens when perforating veins fail to shunt blood to the deep venous system?
Causes superficial veins to enlarge, making valves deficient
T or F: valves are more numerous in superficial veins than deep veins?
What causes varicose veins?
Valve deficiencies from enlarged veins allow the blood to flow backwards
What are the four compartments of the lower extremity?
anterior, posterior, medial, and gluteal compartments
In general what is the function of the muscles in the anterior compartment of the knee?
Knee extension and hip flexion
In general what is the function of the muscles in the medial compartment of the knee?
adduction and medial rotation, some hip hip flexion
In general what is the function of the muscles in the posterior compartment of the knee?
Flexion of the knee, extend hip, medial/lateral rotation
In general what is the function of the muscles in the gluteal compartment of the knee?
Extension of the hip and adbuction
What separates the vastus lateralis from the biceps femoris?
Lateral intermuscular septum
Where does the lateral intermuscular septum exten from and attach to?
from iliotibial tract to the lateral lip of the linea aspera
What lies between vastus medialis and the adductor group?
Medial intermuscular septum
Where does the medial intermuscular septum attach?
medial lip of the linea aspera
What is sandwiched by the adductor magnus and the semimembranosus muscle?
Posterior intermuscular septum
What innervates the muscles of the gluteal/lateral compartment?
direct branches of the lumbosacral plexus
What innervates the muscles of the anterior compartment?
femoral N (except psoas major)
What is the primary innervation of the medial compartment?
What is/are the primary innervation of the posterior compartment?
tibial N, and common fibular N (components of sciatic N)
What innervates the iliopsoas muscle?
ventral rami L1-L3