Anterior thigh

Question 1

Muscles of the anterior thigh

Answer 1

Iliacus,
Psoas major and minor,
Pectineus,
Sartorius,
Quadriceps femoris

Question 2

What muscles make up the iliopsoas

Answer 2

Psoas major and iliacus

Question 3

Origin of psoas major

Answer 3

Lumbar vertebrae

Question 4

Origin of iliacus

Answer 4

Iliac fossa of pelvis

Question 5

Attachment of iliopsoas muscles

Answer 5

Lesser trochanter of femur

Question 6

Action of iliopsoas

Answer 6

Hip flexion,

Assists in lateral rotation at hip

Question 7

Innervation of iliacus

Answer 7

Femoral nerve (L2-L4)

Question 8

Origin of pectineus

Answer 8

Pectineal line on anterior pelvis

Question 9

Attachment of pectineus

Answer 9

Pectineal line on posterior femur, just inferior to lesser trochanter

Question 10

Action of pectineus

Answer 10

Hip flexion,

Adduction at hip

Question 11

Innervation of pectineus

Answer 11

Femoral nerve and branch of obturator nerve

Question 12

Origin of sartorius

Answer 12

ASIS

Question 13

Attachment of sartorius

Answer 13

Superior medial tibia

Question 14

Action of sartorius

Answer 14

Abduction, flexion and lateral rotation at hip

Knee flexion

Question 15

Innervation of sartorius

Answer 15

Femoral nerve (L2-L4)

Question 16

Innervation of psoas major

Answer 16

Anterior rami of L1-L3

Question 17

What are the muscles of quadriceps femoris

Answer 17

Vastus medialis, intermedius and lateralis

Rectus femoris

Question 18

Attachment of quadriceps femoris

Answer 18

Patella ligament which attaches to tibial tuberosity

Question 19

Origin of vastus medialis

Answer 19

Intertrochanteric line of femur (lateral side)

Question 20

Origin of vastus intermedius

Answer 20

Anterior lateral femur

Question 21

Origin of vastus lateralis

Answer 21

Greater trochanter

Question 22

Origin of rectus femoris

Answer 22

ASIS, superior to acetabulum

Question 23

Action of quadriceps femoris

Answer 23

Hip flexion (only rectus femoris crosses hip joint)
Knee extension

Question 24

How do you test femoral nerve damage

Answer 24

Patient lies in supine position with knee flexed
Resist patients extension of leg
This tests quadriceps femoris muscles

Question 25

Action of anterior thigh muscles

Answer 25

Hip flexion,

Knee extension

Question 26

Innervation of quadriceps femoris

Answer 26

Femoral nerve