Posterior Thigh Flashcards
Which muscles originate on ischial tuberosity and cross hip and knee joint?
Semimembranosus
Semitendinosus
Biceps Femoris - Long Head
Which side of the knee does biceps femoris cross on?
Lateral side
Which side of the knee do semimembranosus and semitendinosus cross on?
Medial side
Which two branches does the sciatic nerve give?
Tibial nerve and common fibular nerve
Which two branches does the common fibular nerve give?
Superficial branch of common fibular nerve
Which region does the tibial nerve innervate?
Posterior compartment of leg
Which region does the superficial branch of common fibular nerve innervate?
Lateral compartment of leg
Which region does the deep branch of common fibular nerve innervate?
Anterior compartment of leg
Where does the sciatic nerve pass in relation to the small lateral rotators of the hip?
Superficially
Which leg bone is lateral?
Fibula
Which leg bone is medial?
Tibia
Where does semimembranosus originate?
Ischial tuberosity
Where does semimembranosus insert?
Medial condyle of tibia (posterior aspect)
Where does semitendinosus originate?
Ischial tuberosity
Where does semitendinosus insert?
Tibia: Superior part of medial surface (anterior aspect)
Which actions do semimembranosus and semitendinosus contribute to?
Extension of thigh at hip
Flexion at knee
Medial rotation of leg
What nerve innervates semimembranosus and semitendinosus?
Sciatic nerve: tibial division
Where does the long head of biceps femoris originate?
Ischial tuberosity
Where does the long head of biceps femoris insert?
Head of fibula
Where does the short head of biceps femoris originate?
Lateral lip of linea aspera of femur
Where does the short head of biceps femoris insert?
Head of fibula
Which actions does biceps femoris contribute to?
Extension of thigh at hip (long head)
Flexion at knee
Lateral rotation of leg
Which nerve innervates the long head of biceps femoris?
Sciatic nerve - tibial division
Which nerve innervates the short head of biceps femoris?
Sciatic nerve - fibular division
