Quadriceps Femoris muscles

Question 1

Give the location, origin, insertion, and action of the rectus femoris

Answer 1

o Origin: anterior inferior iliac spine
o Insertion: tibial tuberosity (via patellar ligament)
o Action: flexes the hip; extends the knee

Question 2

Give the location, origin, insertion, and action of the vastus lateralis

Answer 2

o Origin: linea aspera
o Insertion: on the lateral side of the tibial tuberosity
o Action: extends the knee

Question 3

Give the location, origin, insertion, and action of the vastus medialis

Answer 3

o Origin: linea aspera
o Insertion: on the medial side of the tibial tuberosity
o Action: extends the knee

Question 4

Give the location, origin, insertion, and action of the vastus intermedius

Answer 4

o Origin: anterior shaft of femur
o Insertion: tibial tuberosity (via patellar ligament)
o Action: extends the knee