Anterior Thigh Region: Origin, Insertion, and Action

Question 1

Sartorius

Answer 1

Origin: anterior superior iliac spine
Insertion: pes anserine
Action: flexes, abducts, and externally rotates hip

Question 2

Rectus Femoris

Answer 2

Origin: anterior inferior iliac spine
Insertion:tibial tuberosity
Action: flexes hip; extends knee

Question 3

Vastus Lateralis

Answer 3

Origin: greater trochanter; lateral lip of linea aspera
Insertion: tibial tuberosity
Action: extends knee

Question 4

Vastus medialalis

Answer 4

Origin: intertrochanteric line; medial lip of linea aspera
Insertion: tibial tuberosity
Action: extends knee

Question 5

Vastus Intermedius

Answer 5

Origin: anterior lateral surfaces of proximal femur
Insertion: tibial tuberosity
Action extends knee

Question 6

Adductor Longis

Answer 6

Origin: sup. aspect of pubis
Insertion: middle 3rd of linea aspera
Action: adducts and flexes hip

Question 7

Adductor Brevis

Answer 7

O: lateral surface of inf ramus of pubis
I: proximal portion of linea aspera
A: addicted and flexes hip; internally rotates

Question 8

Adductor Magnus

Answer 8

O: inf. Ramos of pubis; ischial tuberosity
I: gluteal tuberosity; linea aspera; medial supracondylar ridge; adductor tubercle of femur
A: adducts and flexes hip

Question 9

Gracilis

Answer 9

O: inf. Border of pubic body near symphysis
I: pes anserine
A: adducts hip; internally rotates

Question 10

Pectineus

Answer 10

O: pectineal line along sup. Ramus of pubis
I: inf. To lesser trochanter
A: adducts and flexes hip