Exam 5 Origins/Insertions

Question 1

Gluteus maximus

Answer 1

O: sacrotuberous ligament, ilium (posterior to posterior gluteal line), sacrum, & coccyx
I: gluteal tuberosity & iliotibial tract (band)

Question 2

Gluteus medius

Answer 2

O: ilium between anterior and posterior gluteal line
I: Greater trochanter

Question 3

Gluteus minimus

Answer 3

O: ilium between anterior and inferior gluteal lines
I: Greater trochanter

Question 4

Piriformis

Answer 4

O: anterior surface of sacrum (inside pelvis)
I: Greater trochanter
Exits through greater sciatic foramen

Question 5

Obturator Internus (Triceps coxae)

Answer 5

O: Obturator membrane & surrounding bone inside pelvis
I: Greater trochanter
Leaves pelvis through lesser sciatic foramen

Question 6

Superior Gemellus

Answer 6

O: Ischial spine
I: Tendon of obturator internus

Question 7

Inferior Gemellus

Answer 7

O: Ischial tuberosity
I: Tendon of obturator internus

Question 8

Quadratus Femoris

Answer 8

O: Ischial tuberosity
I: Intertrochanteric crest

Question 9

Anterior Compartment of thigh

Answer 9

Flexors of hip & extensors of knee:
Sartorius, Rectus femoris, vastus lateralis, vastus medialis, vastus intermedius, articularis genu, psoas major, Iliacus, & tensor fascia lata

Question 10

Sartorius

Answer 10

O: Anterior superior iliac spine
I: Medial to tibial tuberosity (superior part of medial surface of tibia)

Question 11

Rectus femoris

Answer 11

Part of Quadriceps femoris
O: Anterior inferior iliac spine
I: patella (via Quadriceps femoris tendon)

Question 12

Vastus lateralis

Answer 12

Part of Quadriceps femoris
O: Linea aspera (lateral lip)
I: Patella (via Quadriceps femoris tendon)

Question 13

Vastus medialis

Answer 13

Part of Quadriceps femoris
O: Linea aspera (medial lip)
I: Patella (via Quadriceps femoris tendon)

Question 14

Vastus intermedius

Answer 14

Part of Quadriceps femoris
O: body of femur (anterior side of femoral shaft)
I: Patella (via Quadriceps femoris tendon between other two vastus & under rectus femoris)

Question 15

Articularis genus

Answer 15

O: Anterior part of femur (at suprapatellar recess)
I: synovial membrane of knee (at knee joint capsule)

Question 16

Psoas major

Answer 16

O: Lumbar vertebrae
I: Lesser trochanter of femur

Question 17

Iliacus

Answer 17

O: Iliac crest & fossa
I: Lesser trochanter of femur

Question 18

Tensor fascia latae

Answer 18

O: Anterior superior iliac spine
I: Iliotibial tract

Question 19

Medial compartment of thigh

Answer 19

Adductor group:

Pectineus, adductor longus, adductor brevis, adductor magnus, gracilis, obturator externus

Question 20

Pectineus

Answer 20

O: Superior ramus of pubis
I: Pectineal line of femur

Question 21

Adductor longus

Answer 21

O: Body of pubic bone
I: Linea aspera of femur

Question 22

Adductor brevis

Answer 22

O: Inferior ramus of pubic bone
I: Linea aspera of femur

Question 23

Adductor magnus

Answer 23

O: Inferior pubic ramus, ischial ramus (Adductor part), & ischial tuberosity (Hamstring part)
I: Linea aspera of femur (Adductor deep part)
Adductor tubercle of femur (Hamstring superficial part)

Question 24

Gracilis

Answer 24

O: Inferior ramus of pubic
I: Superior part of medial surface of tibia (along with tendons of sartorius & semitendionsus)

Question 25

Obturator externus

Answer 25

O: Margins of obturator foramen & obturator membrane I: Trochanteric fossa of femur

Question 26

Posterior compartment of thigh

Answer 26

Hamstring muscles: | Biceps femoris, Semitendinosus, Semimembranosus

Question 27

Biceps femoris

Answer 27

Long head: O: Ischial tuberosity I: Fibular head Short head: O: Linea aspera (lateral lip in middle third of femur) I: Fibular head

Question 28

Semitendinosus

Answer 28

O: Ischial tuberosity I: Medial surface of upper tibia

Question 29

Semimembranosus

Answer 29

O: Ischial tuberosity I: Medial tibial condyle

Question 30

Anterior compartment of leg

Answer 30

Extensors (dorsiflexor) | Tibialis anterior, extensor hallucis longus, extensor digitorm longus, Peroneus tertius

Question 31

Tibialis Anterior

Answer 31

O: Tibia & IO membrane I: Medial cuneiform (medial & plantar surface) & first metatarsal

Question 32

Extensor Hallucis Longus

Answer 32

O: Fibula & IO membrane I: Distal phalanx 1st toe

Question 33

Extensor Digitorum Longus

Answer 33

O: Tibia, fibula, & IO membrane I: middle & distal phalanges toe 2-5

Question 34

Peroneus (Fibularis) Tertius

Answer 34

O: Distal Fibula & IO membrane (anterior border) I: 5th metatarsal base

Question 35

Lateral compartment of leg

Answer 35

Everters: | Peroneus longus, Peroneus brevis

Question 36

Peroneus (Fibularis) Longus

Answer 36

O: Lateral fibula (head & proximal 2/3) I: Base 1st metatarsal & medial cuneiform (plantar surface)

Question 37

Peroneus (Fibularis) Brevis

Answer 37

O: Lateral fibula (distal 1/2) I: Tuberosity 5th metatarsal (base)

Question 38

Posterior Compartment of Leg

Answer 38

Flexors: | Gastrocnemius, Soleus, Plantaris, Popliteus, Flexor hallucis longus, Flexor digitorum longus, Tibialis posterior

Question 39

Gastrocnemius

Answer 39

O: Lateral & medial condyles of femur (2 heads join together) I: Calcaneus via calcaneal tendon

Question 40

Soleus

Answer 40

O: Fibula, soleal line of tibia I: Calcaneus via calcaneal tendon

Question 41

Triceps surae

Answer 41

Gastrocnemius & Soleus together | Share calcaneal tendon

Question 42

Plantaris

Answer 42

O: Lateral supracondylar line of femur (just above lateral head of Gastrocnemius) I: Calcaneus (long tendon, separate from calcaneal tendon)

Question 43

Popliteus

Answer 43

O: Lateral condyle of femur I: Superior to soleal line of tibia

Question 44

Flexor hallucis longus

Answer 44

Deeper compartment O: Fibula & IO membrane I: Base of 1st distal phalanx

Question 45

Flexor digitorum longus

Answer 45

Deeper compartment O: Tibia inferior to soleal line I: bases distal phalanges toes 2-5

Question 46

Tibialis posterior

Answer 46

Deeper compartment O: Tibia, fibula, & IO membrane I: Navicular, cuneiforms, cuboid, bases of 2-4 metatarsals

Question 47

Extensor digitorum brevis

Answer 47

Only intrinsic muscle of dorsum of foot O: Calcaneus I: 2nd - 4th toes (middle phalanges)

Question 48

Extensor hallucis brevis

Answer 48

Part of Extensor digitorum brevis O: Calcaneus I: 1st toe (proximal phalanx)