Muscles of the Thigh: Posterior Femoral Muscles Flashcards
What is the origin of the bicep femoris long head?
ischial tuberosity
What is the origin of the bicep femoris short head?
linea aspera of femur
What is the origin of the semitendinosus?
ischial tuberosity
What is the origin of the semimembranosus?
ischial tuberosity
What is the insertion of the bicep femoris long head?
head of fibula
What is the insertion of the biceps femoris short head?
head of fibular (shares tendon with long head)
What is the insertion of the semitendinosus?
proximal medial tibia
What is the insertion of the semimembranosus?
proximal posterior tibia
What is the action of the biceps femoris long head?
flex leg (knee joint) and extend thigh (hip joint)
What is the action of the biceps femoris short head?
flex leg (knee joint)
What is the action of the semitendinosus?
flex leg (knee joint), extend thigh (hip joint)
What is the action of the semimembranosus?
flex leg (knee joint), extend thigh (hip joint)
What nerve innervates the biceps femoris long head, semitendinosus, and semimembranosus?
tibial nerve
What nerve innervates the biceps femoris short head?
common fibular (peroneal) nerve
