Muscles that flex the knee Flashcards
Gracilis
(origin)
Inferior ramus of pubis, ramus of ischium
Gracilis
(insertion)
Medial surface of proximal tibia (pes anserine), distal to medial condyle
Gracilis
(action)
Adduct hip, Medially rotate hip if knee flexed, knee flexion
Gracilis
(innervation)
Obturator nerve
Biceps Femoris long head
(origin)
ischial tuberosity
Biceps femoris long head
(insertion)
head of the fibula
Biceps femoris long head
(action)
Extend hip, flex knee, laterally rotate knee
Biceps femoris long head
(innervation)
tibial nerve
Biceps femoris short head
(origin)
linea aspera of femur
Biceps femoris short head
(insertion)
head of fibula
Biceps femoris short head
(action)
flex knee, laterally rotate knee
Biceps femoris short head
(innervation)
common fibular nerve
Semimembranosus
(origin)
ischial tuberosity
Semimembranosus
(insertion)
medial condyle of tibia posterior side
Semimembranosus
(action)
extend hip, flex knee, medially rotate knee
Semimembranosus
(innervation)
tibial nerve
Semitendinosus
(origin)
ischial tuberosity
Semitendinosus
(insertion)
medial surface of proximal tibia (pes anserine), distal to medial condyle
Semitendinosus
(action)
extend hip, flex knee, medially rotate knee
Semitendinosus
(innervation)
tibial nerve
Popliteus
(origin)
lateral femoral condyle
Popliteus
(insertion)
proximal 1/3 of posterior tibia (proximal to soleal line)
Popliteus
(action)
medial rotation of tibia on femur, lateral rotation of femur on tibia, flex knee
Popliteus
(innervation)
tibial nerve
Sartorius
(origin)
Anterior Superior Iliac Spine
Sartorius
(insertion)
Medial Surface of proximal tibia (pes ansrine) distal to tibial tuberosity
Sartorius
(action)
Flex, abduct, laterally rotate hip, flex knee
Sartorius
(innervation)
Femoral nerve
