Origins, insertions + actions of anterior thigh muscles

Question 1

Obturator externus

Answer 1

Origin: Obturator membrane.
Insertion: Greater trochanter.
Action: Lateral rotation.
NS: Obturator nerve.
BS: Obturator artery.

Question 2

Adductor brevis

Answer 2

Origin: Body of pubis + inferior pubic ramus.
Insertion: Linea Aspera.
Action: Adduction + Flexion.
NS: Obturator nerve.
BS: Obturator artery.

Question 3

Pectineus

Answer 3

Origin: Superior pubic ramus.
Insertion: Pectineal line.
Action: Adduction + flexion.
NS: Femoral + obturator nerve.
BS: obturator artery.

Question 4

Adductor longus

Answer 4

Origin: Anterior surface of body of the pubis.
Insertion: Linea aspera.
Action: Adduction + flexion.
NS: Obturator nerve.
BS: Deep femoral artery.

Question 5

Adductor Magnus (True)

Answer 5

Origin: Inferior pubic ramus + ischial tuberosity.
Insertion: Gluteal tuberosity + linea aspera.
Action: Adduction + flexion.
NS: Obturator nerve.
BS: Obturator artery.

Question 6

Adductor Magnus (Ex hamstring)

Answer 6

Origin: Inferior pubic ramus + ischial tiberosity.
Insertion: Gluteal tuberosity + linea aspera.
Action: Adduction, extension + lateral rotation.
NS: Sciatic tibial nerve.
BS: Obtuator nerve.

Question 7

Gracilis

Answer 7

Origin: Body of pubis.
Insertion: Pes ansirenus.
Action: Adduction + flexion.
NS: Obturator nerve.
BS: Obturator artery.

Question 8

Vastus medialis

Answer 8

Origin: Intertrochanteric line of femur + linea aspera.
Insertion: Patella.
Action: Knee extension.
NS: Femoral nerve.
BS: Femoral artery.

Question 9

Vastus intermedius

Answer 9

Origin: Linea aspera.
Insertion: Patella.
Action: Knee extension.
NS: Femoral nerve.
BS: Femoral artery.

Question 10

Vastus lateralis

Answer 10

Origin: Intertrochanteric line of femur + linea aspera.
Insertion: Patella.
Action: Knee extension.
NS: Femoral Nerve.
BS: Femoral artery.

Question 11

Rectus femoris

Answer 11

Origin: AIIS.
Insertion: Patella.
Action: Knee extension + hip flexion.
NS: Femoral nerve.
BS: Deep femoral artery.

Question 12

Sartiouris

Answer 12

Origin: ASIS.
Insertion: Pes Ansirenis.
Action: Flexion + Medial rotation of leg + Flexion + Abduction of the hip.
NS: Femoral nerve.
BSL femoral artery.

Question 13

Tensor fascia latae

Answer 13

Origin: ASIS.
Insertion: Iliotibial band.
Action: Medial rotation, abduction + felxion.
NS: Superior gluteal nerve.
BS: Superior gluteal artery.