Anterior thigh muscles

Question 1

Sartorius

Answer 1

• Origin: ASIS + area just below
• Insertion: vertical line on the medial side of the shaft of the tibia anterior to both semitendinosus + gracilis
  Movements
• flexion of the hip + knee,
• lateral rot. + abduction of the thigh
• medial rot. of the tibia on the femur
  TAILOR SITTING POSITION

Question 2

Rectus femoris

Answer 2

• Origin: two heads continuous w/ each other, one to the anterior inferior iliac spine (the straight head) + the other to a rough area immediately above the acetabulum (the reflected head)
• Insertion: upper border of the patella
  Movements
• extends knee
• flexes thigh

Question 3

Vastus medialis

Answer 3

• Origin: lower medial end of the intertrochanteric line , running inferiorly around the medial aspect of the upper end of the shaft on the spiral line , medial lip of the linea aspera , continuing on to the upper two-thirds of the medial supracondylar line , medial intermuscular septum + tendon of adductor magnus
• Insertion: tendon of rectus femoris, medial border of the patella + front of the medial condyle of the tibia
  Movements
• extends knee

Question 4

Vastus intermedius

Answer 4

• Origin: upper two-thirds of the anterior + lateral surfaces of the femur
• Insertion: deep surface of the tendon of rectus femoris, the other vastus muscles + the base of the patella
  Movements
• extends knee

Question 5

Vastus lateralis

Answer 5

• Origin: upper lateral part of the intertrochanteric line , lower border of the greater trochanter, lateral side of the gluteal tuberosity + upper half of the lateral lip of the linea aspera
• Insertion: tendon inserts into the tendon of rectus femoris + base + lateral border of the patella
  Movements
• extends knee