Unit 5 - Lower Limb: Anterior Thigh Muscles (Ex. IV)

Question 1

sartorius

Answer 1

O: ASIS
I: M to tibial tuberosity (on pes anserinus w/ gracilis and semitendinosus)
Inn: femoral n. (L2, L3)
A: flexion, abduction, and external (L) rotation of hip; flexion and internal (M) rotation of knee

Question 2

quadriceps femoris - rectus femoris

Answer 2

O: AIIS; acetabular roof of hip joint
I: tibial tuberosity via patellar ligament
Inn: femoral n. (L2-L4)
A: hip flexion; knee extension

Question 3

quadriceps femoris - vastus medialis

Answer 3

O: M lip of linea aspera; distal part of intertrochanteric line
I: both sides of tuberosity on M and L condyles via M and L longitudinal patellar retinacula
Inn: femoral n. (L2-L4)
A: knee extension

Question 4

quadriceps femoris - vastus lateralis

Answer 4

O: L lip of linea aspera; L surface of greater trochanter of femur
I: both sides of tuberosity on M and L condyles via M and L longitudinal patellar retinacula
Inn: femoral n. (L2-L4)
A: knee extension

Question 5

quadriceps femoris - vastus intermedius

Answer 5

O: A side of femoral shaft
I: tibial tuberosity via patellar ligament
Inn: femoral n. (L2-L4)
A: knee extension

Question 6

quadriceps femoris - articularis genus

Answer 6

O: A side of femoral shaft @ level of suprapatellar recess
I: suprapatellar recess of knee joint capsule
Inn: femoral n. (L2-L4)
A: knee extension; prevents entrapment of capsule

Question 7

common insertion of quadriceps femoris

Answer 7

tibial tuberosity via patellar ligament