Muscles

Question 1

How many muscles are in the anterior thigh?

Answer 1

8

Question 2

Name the 8 muscles in the anterior thigh

Answer 2

Psoas major, Iliacus, Tensor Fasciae latae, Sartorius, Quadriceps femoris (rectus femoris, vastus lateralis, vastus medialis, vastus intermedius)

Question 3

Name the origin and insertion of Psoas Major

Answer 3

Origin - sides of vertebrae T12-L5 and transverse processes of L1-L5
Insertion - Lesser trochanter of femur

Question 4

Name the innervation of Psoas Major

Answer 4

Anterior rami L1-3

Question 5

Name the action of Psoas Major

Answer 5

Flexes the thigh at the hip

Stabilises the hip

Question 6

Name the blood supply of Psoas Major

Answer 6

Lumbar branches of iliolumbar artery

Question 7

Name the origin and insertion of Iliacus

Answer 7

Origin - iliac crest

Insertion - inferior to lesser trochanter

Question 8

Name the innervation of Iliacus

Answer 8

Femoral nerve (L2, L3)

Question 9

Name the action of Iliacus

Answer 9

Flexes the thigh at the hip

Stabilises the hip

Question 10

Name the blood supply of Iliacus

Answer 10

Iliac branches of iliolumbar artery

Question 11

Name the origin and insertion of Tensor Fasciae Latae

Answer 11

Origin - ASIS

Insertion - lateral condyle of tibia

Question 12

Name the innervation of TFL

Answer 12

Superior Gluteal Nerve (L4, L5)

Question 13

Name the action of TFL

Answer 13

Abducts the thigh at the hip

Medially rotates and flexes the thigh at the hip

Question 14

Name the blood supply of TFL

Answer 14

Superior gluteal arteries

Lateral circumflex femoral artery

Question 15

Name the origin and insertion of Sartorius

Answer 15

Origin - ASIS

Insertion - Superior part of medial surface of tibia

Question 16

Name the innervation of Sartorius

Answer 16

Femoral Nerve (L2, L3, L4)

Question 17

Name the action of Sartorius

Answer 17

Flexes the thigh at the hip
Abducts
Laterally rotates the thigh
Flexes at the knee

Question 18

Name the blood supply of Sartorius

Answer 18

Femoral artery

Question 19

Name the origin and insertion of Rectus Femoris

Answer 19

Origin - Anterior inferior iliac spine, groove superior to acetabulum
Insertion - patella via patella tendon

Question 20

Name the innervation of Rectus Femoris

Answer 20

Femoral nerve (L2, L3, L4)

Question 21

Name the action of Rectus Femoris

Answer 21

Extends the leg at the knee

Flexes the thigh at the hip joint

Question 22

Name the blood supply of Rectus Femoris

Answer 22

Lateral circumflex femoral artery

Deep femoral artery

Question 23

Name the origin and insertion of Vastus Lateralis

Answer 23

Origin - greater trochanter and lateral lip of linea aspera of femur
Insertion - patella via patella tendon

Question 24

Name the innervation of Vastus Lateralis

Answer 24

Femoral nerve (L2, L3, L4)

Question 25

Name the action of Vastus Lateralis

Answer 25

Extends the leg at the knee

Stabilises the patella

Question 26

Name the blood supply of Vastus Lateralis

Answer 26

Lateral circumflex femoral artery

Deep femoral artery

Question 27

Name the origin and insertion of Vastus Medialis

Answer 27

Origin - Intertrochanteric line and medial lip of linea aspera of femur
Insertion - patella via patella tendon

Question 28

Name the innervation of Vastus Medialis

Answer 28

Femoral nerve (L2, L3, L4)

Question 29

Name the action of Vastus Medialis

Answer 29

Extends the leg at the knee

Stabilises the patella (stabilises well due to horizontal fibres at the distal end)

Question 30

Name the blood supply of Vastus Medialis

Answer 30

Femoral artery

Deep femoral artery

Question 31

Name the origin and insertion of Vastus Intermedius

Answer 31

Origin - anterior and lateral surfaces of body of femur

Insertion - patella via patella tendon

Question 32

Name the innervation of Vastus Intermedius

Answer 32

Femoral nerve (L2, L3, L4)

Question 33

Name the action of Vastus Intermedius

Answer 33

Extends the leg at the knee

Stabilises the patella

Question 34

Name the blood supply of Vastus Intermedius

Answer 34

Lateral circumflex femoral artery

Deep femoral artery