Anterior and Medial Thigh Muscles

Question 0

Pectineus insertion

Answer 0

Pectineal line of femur, just inferior to lesser trochanter

Question 1

Pectineus origin

Answer 1

Superior ramus of pubis

Question 2

Pectineus innervation

Answer 2

Femoral nerve (L2, L3)
May receive branch from obturator nerve

Question 3

Pectineus action

Answer 3

Adducts and flexes hip joint

Assists with medial rotation of hip joint

Question 4

Sartorius origin

Answer 4

Anterior superior iliac spine and superior part of notch inferior to it

Question 5

Sartorius insertion

Answer 5

Superior part of medial surface of tibia

Question 6

Sartorius innervation

Answer 6

Femoral nerve (L2, L3)

Question 7

Sartorius action

Answer 7

Flexes, abducts and laterally rotates hip joint, flexes knee joint

Question 8

Psoas major origin

Answer 8

Sides of t12-l4 vertebrae and discs between them, transverse processes of all lumbar vertebrae

Question 9

Psoas major insertion

Answer 9

Lesser trochanter of femur

Question 10

Psoas major innervation

Answer 10

Anterior rami of lumbar nerves

L1, L2, L3

Question 11

Psoas major action

Answer 11

Acting conjointly in flexing hip joint and in stabilizing the joint, psoas major is also a postural muscles that helps control deviation if the trunk and is active during standing

Question 12

Iliacus origin

Answer 12

Iliac crest, iliac fossa, ala of sacrum and anterior sacroiliac ligaments

Question 13

Iliacus insertion

Answer 13

Tendon of psoas major, lesser trochanter and femur distal to it

Question 14

Iliacus innervation

Answer 14

Femoral nerve

L2, L3

Question 15

Iliacus action

Answer 15

Acts with psoas major to flex and stabilize hip joint

Question 16

Rectus femoris origin

Answer 16

Anterior inferior iliac spine and ilium superior to acetabulum

Question 17

Rectus femoris insertion

Answer 17

Via common tendinous (quadriceps tendon) and independent attachments to base of patella, indirectly via patellar ligament to tibial tuberosity,vast us medial is and lateral is also attach to tibia and patella via aponeuroses (medial and lateral patellar retinacula)

Question 18

Rectus femoris innervation

Answer 18

Femoral nerve

L2, l3, l4

Question 19

Rectus femoris action

Answer 19

Extends knee joint

Also stabilizes hip joint and helps ilio psoas flex hip joint

Question 20

Vastus lateralis origin

Answer 20

Greater trochanter and lateral lip of linea aspera

Question 21

Vastus lateralis insertion

Answer 21

Via common tendinous (quadriceps tendon) and independent attachments to base of patella, indirectly via patellar ligament to tibial tuberosity,vast us medial is and lateral is also attach to tibia and patella via aponeuroses (medial and lateral patellar retinacula)

Question 22

Vastus lateralis innervation

Answer 22

Femoral nerve

L2, l3, l4

Question 23

Vastus lateralis action

Answer 23

Extends knee joint

Question 24

Vastus medialis origin

Answer 24

Intertrochanteric line and medial lip of linea aspera

Question 25

Vastus medialis insertion

Answer 25

Via common tendinous (quadriceps tendon) and independent attachments to base of patella, indirectly via patellar ligament to tibial tuberosity,vast us medial is and lateral is also attach to tibia and patella via aponeuroses (medial and lateral patellar retinacula)

Question 26

Vastus medialis innervation

Answer 26

Femoral nerve | L2, l3, l4

Question 27

Vastus medialis action

Answer 27

Extends knee joint

Question 28

Vastus intermedius origin

Answer 28

Anterior and lateral surfaces of shaft of femur

Question 29

Vastus intermedius insertion

Answer 29

Via common tendinous (quadriceps tendon) and independent attachments to base of patella, indirectly via patellar ligament to tibial tuberosity,vast us medial is and lateral is also attach to tibia and patella via aponeuroses (medial and lateral patellar retinacula)

Question 30

Vastus intermedius innervation

Answer 30

Femoral nerve | L2, l3, l4

Question 31

Vastus intermedius action

Answer 31

Extends knee joint

Question 32

Adductor longus origin

Answer 32

Body of pubis inferior to pubic crest

Question 33

Adductor longus insertion

Answer 33

Middle third of linea aspera of femur

Question 34

Adductor longus innervation

Answer 34

Obturator nerve | L2, l3, l4

Question 35

Adductor longus action

Answer 35

Adducts hip joint

Question 36

Adductor brevis origin

Answer 36

Body and inferior ramus of pubis

Question 37

Adductor brevis insertion

Answer 37

Pectineal line and proximal part of linea aspera of femur

Question 38

Adductor brevis innervation

Answer 38

Obturator nerve | L2, l3, l4

Question 39

Adductor brevis action

Answer 39

Adducts hip Joint and to some extent flexes it

Question 40

Adductor Magnus origin

Answer 40

Adductor part: inferior ramus of pubis, ramus of ischium | Hamstring part: ischial tuberosity

Question 41

Adductor Magnus insertion

Answer 41

Adductor part: gluteal tuberosity, linea aspera, medial supracondylar line Hamstring part: adductor tubercle of femur

Question 42

Adductor Magnus innervation

Answer 42

Adductor part: obturator nerve: L2, L3, L4 | Hamstring part: tibial part of sciatic nerve: L4

Question 43

Adductor Magnus action

Answer 43

Adducts hip joint It's adductor part also flexes hip joint Hamstring part extends it

Question 44

Gracilis origin

Answer 44

Body and inferior ramus of pubis

Question 45

Gracilis insertion

Answer 45

Superior part of medial surface of tibia

Question 46

Gracilis innervation

Answer 46

Obturator nerve | L2, L3

Question 47

Gracilis action

Answer 47

Adducts hip joint, flexes knee joint and helps rotate it medially

Question 48

Obturator externus origin

Answer 48

Margins of obturator foramen and obturator membrane

Question 49

Obturator externus insertion

Answer 49

Trochanteric fossa of femur

Question 50

Obturator externus innervation

Answer 50

Obturator nerve | L3, l4

Question 51

Obturator externus action

Answer 51

Laterally rotates hip joint, pulls head of femur into acetabulum holding pelvis steady