Lower Extremity - Origin

Question 1

What is the origin of the tensor fasciae latae?

Answer 1

Anterior superior iliac spine (ASIS) and anterior portion of the iliac crest

Question 2

What is the origin of the sartorius?

Answer 2

Anterior superior iliac spine (ASIS)

Question 3

What is the origin of the rectus femoris?

Answer 3

Straight head: Anterior inferior iliac spine (AIIS)

Reflected head: Ilium superior to the acetabulum

Question 4

What is the origin of the vastus lateralis?

Answer 4

Greater trochanter of the femur through the lateral lip of the linea aspera

Question 5

What is the origin of the vastus intermedius?

Answer 5

Anterior and lateral aspects of the femoral shaft; lateral intermuscular septum

Question 6

What is the origin of the vastus medialis?

Answer 6

Intertrochanteric line; medial lip of the linea aspera; medial intermuscular septum

Question 7

What is the origin of the pectineus?

Answer 7

Pectin of the pubic bone

Question 8

What is the origin of the adductor longus?

Answer 8

Body of pubic bone beneath pubic tubercle

Question 9

What is the origin of the adductor brevis?

Answer 9

Body and inferior ramus of the pubis

Question 10

What is the origin of the obturator externus?

Answer 10

Margins of the obturator foramen and obturator membrane

Question 11

What is the origin of the adductor magnus?

Answer 11

Inferior ramus of pubis; ramus of the ischium; ischial tuberosity

Question 12

What is the origin of the gracilis?

Answer 12

Body and inferior ramus of the pubis

Question 13

What is the origin of the gluteus maximus?

Answer 13

Posterior gluteal line of ilium; dorsal surfaces of sacrum and coccyx; sacrotuberous ligament

Question 14

What is the origin of the gluteus medius?

Answer 14

Between anterior and posterior gluteal lines

Question 15

What is the origin of the gluteus minimus?

Answer 15

Between anterior and inferior gluteal lines

Question 16

What is the origin of the piriformis?

Answer 16

Anterior surfaces of S2 - S4; sarcotuberous ligament

Question 17

What is the origin of the superior gemellus?

Answer 17

Spine of the ischium

Question 18

What is the origin of the inferior gemellus?

Answer 18

Ischial tuberosity

Question 19

What is the origin of the obturator internus?

Answer 19

Pelvic membrane of obturator membrane; pelvic bones surrounding obturator foramen

Question 20

What is the origin of the quadratus femoris?

Answer 20

Lateral border of ischial tuberosity

Question 21

What is the origin of the semitendinosus?

Answer 21

Ischial tuberosity

Question 22

What is the origin of the semimembranosus?

Answer 22

Ischial tuberosity

Question 23

What is the origin of the biceps femoris (short head)?

Answer 23

Linea aspera; lateral supracondylar line of femur

Question 24

What is the origin of the biceps femoris (long head)?

Answer 24

Ischial tuberosity

Question 25

What is the origin of the peroneus longus?

Answer 25

Head and proximal 2/3 of fibula

Question 26

What is the origin of the peroneus brevis?

Answer 26

Distal 2/3 of fibula

Question 27

What is the origin of the tibialis anterior?

Answer 27

Lateral condyle of tibia; proximal half of tibia; interosseus membrane

Question 28

What is the origin of the extensor hallucis longus?

Answer 28

Middle of anterior surface of fibula; interosseus membrane

Question 29

What is the origin of the extensor digitorum longus?

Answer 29

Lateral condyle of tibia; upper anterior surface of fibula; interosseus membrane

Question 30

What is the origin of the gastrocnemius (lateral head)?

Answer 30

Lateral condyle of femur

Question 31

What is the origin of the gastrocnemius (medial head)?

Answer 31

Medial condyle of femur; popliteal surface above medial condyle

Question 32

What is the origin of the soleus?

Answer 32

Posterior head of fibula; proximal third of posterior fibula; soleal line; medial border of tibia

Question 33

What is the origin of the plantaris?

Answer 33

Lateral supracondylar line of femur; oblique popliteal ligament

Question 34

What is the origin of the popliteus?

Answer 34

Lateral surface of lateral condyle of femur; capsule of knee joint

Question 35

What is the origin of the flexor hallucis longus?

Answer 35

Inferior 2/3 of posterior surface of fibula; inferior surface of interosseus membrane

Question 36

What is the origin of the flexor digitorum longus?

Answer 36

Middle portion of posterior surface of fibula; fascia covering tibialis posterior

Question 37

What is the origin of the tibialis posterior?

Answer 37

Posterior surfaces of interosseus membrane, tibia and fibula

Question 38

What is the origin of the abductor hallucis?

Answer 38

Medial process of calcaneal tuberosity; plantar aponeurosis; flexor retinaculum

Question 39

What is the origin of the flexor digitorum brevis?

Answer 39

Medial tubercle of calcaneal tuberosity; plantar aponeurosis; intermuscular septa

Question 40

What is the origin of the abductor digiti minimi?

Answer 40

Medial and lateral tubercles of calcaneal tuberosity; plantar aponeurosis; flexor retinaculum

Question 41

What is the origin of the flexor hallucis brevis?

Answer 41

Lateral cuneiform and cuboid

Question 42

What is the origin of the quadratus plantae?

Answer 42

Medial and lateral surfaces of calcaneus

Question 43

What is the origin of the flexor digiti minimi brevis?

Answer 43

Base of 5th metatarsal bone; plantar ligament

Question 44

What is the origin of the lumbrical muscles?

Answer 44

Tendons of flexor digitorum longus

Question 45

What is the origin of the adductor hallucis?

Answer 45

Oblique head: Bases of 2nd - 4th metatarsal bones; long plantar ligament Transverse head; Plantar metatarsophalangeal ligaments of 3rd - 5th toes

Question 46

What is the origin of the dorsal interossei?

Answer 46

Sides of metatarsal bones

Question 47

What is the origin of the plantar interossei?

Answer 47

Medial sides of 3rd to 5th metatarsal bones