Muscles of the Thigh Flashcards
Sartorius Origin
ASIS and notch below it
Sartorius insertion
Proximal part of medial surface of the body of the tibia
Sartorius innervation
Femoral nerve
Sartorius function
Flex, abduct, and laterally rotate hip
Flex knee
Medially rotate leg from flexed position
Quadriceps femoris insertion
Tibial tuberosity via patellar ligament
Quadriceps femoris innervation
Femoral nerve
Quadriceps femoris function
Extend knee
Rectus femoris is only quad to flex hip
Rectus femoris origin
Aponeurosis of straight (from ASIS) and reflected (from above acetabulum) tendons
Vastus lateralis origin
Lateral lip of linea aspera
Lateral lip of gluteal tuberosity
Anterior and inferior borders of the greater trochanter and proximal intertrochanteric line
Vastus medialis origin
Distal intertrochanteric line
Medial intermuscular septum
Tendons of adductor longus and magnus
Medial lip of linea aspera
Vastus intermedius origin
Proximal two-thirds of the anterior and lateral surfaces of the femur
Articularis genu origin
Anterior surface of the distal femur
Articularis genu insertion
Synovial membrane of the knee joint
Articularis genu innervation
Femoral nerve
Articularis genu function
draw synovium proximally
Gracilis origin
Inferior half of the pubic symphysis, pubic body, and the superior half of the pubic arch (inferior pubic ramus)
Gracilis insertion
Proximal part of the medial surface of the tibia in common with sartorius and semitendinosus
Gracilis nerve supply
Anterior division of the obturator nerve
Gracilis function
Adduct and medial rotate the hip
Flex knee
Pectineus origin
Pecten pubis, the bone anterior to the pecten pubis between the pubic tubercle and iliopectineal eminence
Pecineus insertion
Pectineal line
Pectineus innervation
Femoral nerve
Sometimes accessory obturator or obturator
Pectineus function
Flex, adduct, and medially rotate hip
Obturator externus origin
Portions of ischium and pubis surrounding medial margin of the obturator foramen and from obturator membrane
Obturator externus insertion
trochanteric fossa of the femur
Obturator externus innervation
Posterior division of the obturator nerve
Obturator externus function
Adduct and laterally rotate hip
Adductor longus origin
Front of the body of the pubis
Adductor longus insertion
Medial lip of the linea aspera between vastus medialis and adductor magnus attachments
Adductor longus function
Flex and adduct the hip
Adductor longus innervation
Anterior brand of obturator nerve
Adductor brevis origin
Pubic body and inferior pubic ramus
Adductor brevis insertion
Proximal part of linea aspera
Adductor brevis innervation
Obturator nerve (usually anterior division)(
Adductor brevis function
Adduct and flex the hip
Adductor magnus origin
Inferior pubic ramus
Ischial ramus
Ischial tuberosity
Adductor magnus insertion
Gluteal tuberosity
Linea aspera
Medial supracondylar line
Adductor tubercle of the femur
Adductor magnus innervation
Posterior division of the obturator nerve
Tibial portion of the sciatic nerve
Adductor magnus functions
Adduct, flex, and extend hip
Long head of biceps femoris origin
Posterior part of the ischial tuberosity in common with semitendinosus
Sacrotuberout ligament
Short head of biceps femoris origin
Lateral lip of linea aspera between adductor magnus and vastus lateralis
Biceps femoris insertion
Lateral side of the styloid process of the fibular head and lateral condyle of tibia
Long head of biceps femoris innervation
Tibial portion of sciatic nerve
Short head of biceps femoris innervation
Common fibular portion of the sciatic nerve
Biceps femoris function
Flex and laterally rotate knee
Long head extends and laterally rotates hip
Semitendinosus origin
Posterior ischial tuberosity in common for 8 cm with biceps femoris
Semitendinosus insertion
Proximal part of the medial surface of tibia
Semitendinosus innervation
Tibial portion of sciatic nerve
Semitendinosus function
Flex and medially rotate knee
Extend hip
Semimembranosus origin
Oblique line of ischial tuberosity above biceps femoris and semitendinosus
Semimembranosus insertion
Groove on medial surface of medial condyle of tibia
Also continues to form the oblique popliteal ligament
Semimembranosus innervation
Tibail portion of sciatic nerve
Semimembranosus function
Flex and medially rotate knee
Extend thigh