Lower Extremity Muscles

Question 1

List the four compartments of the thigh.

Answer 1

•Anterior
•Lateral
•Posterior
•Medial

Question 2

What structures forms the compartments of the thigh?

Answer 2

Fascia lata the deep fascia

Question 3

What muscle is part of the lateral compartment of the thigh and crosses the knee joint?

Answer 3

Tensor fasciae latae

Question 4

What muscles origin is anterior superior iliac spine, insertion anterolateral aspect of lateral tibial condyle, action abducts thigh?

Answer 4

Tensor fascia latae

Question 5

What muscles origin is anterior superior iliac spine, insertion superior part of the medial surface of tibia, action flexes abducts and laterally rotates at thigh?

Answer 5

Sartorius

Question 6

What is the collective name of the group of four extensors of the knee in the anterior compartment of the thigh?

Answer 6

Quadriceps femoris

Question 7

Of the four extensors in the anterior compartment of the thigh which crosses the hip joint and is a flexor of the hip?

Answer 7

Rectus femoris

Question 8

What muscles origin is anterior inferior iliac spine, insertion tibial tuberosity, action extension of the knee and flexion of the hip?

Answer 8

Rectus femoris

Question 9

What muscles origin is greater trochanter and linea aspera of femur, insertion tibial tuberosity, action extension of the knee?

Answer 9

Vastus lateralis

Question 10

What muscles origin is medial surface and linea aspera of femur, insertion tibial tuberosity, extension of the knee?

Answer 10

Vastus medialis

Question 11

What muscles origin anterior lateral surfaces of femur, insertion tibial tuberosity, action extension of the knee?

Answer 11

Vastus intermedius

Question 12

List all of the muscles of the anterior compartment of the thigh that cross the knee joint.

Answer 12

•Sartorius
•Rectus femoris
•Vastus lateralis
•Vastus intermedius
•Vastus medialis

Question 13

What muscles origin is body and inferior ramus of pubis, insertion proximal medial surface of tibia, action adducts thigh flexes and rotates leg medially at knee?

Answer 13

Gracilis

Question 14

What tendons make up the Pes Anserinus?

Answer 14

•Semitendinosus tendon
•Gracilis tendon
•Sartorius tendon

Question 15

What muscles origin is Pectineal line of pubis, insertion Pectineal line of femur, action adducts flexes and laterally rotates thigh?

Answer 15

Pectineus

Question 16

What muscles origin is pubis, insertion middle third of linea aspera of the femur, action adducts flexes and laterally rotates thigh?

Answer 16

Adductor longus

Question 17

What muscles origin is body and inferior ramus of the pubis, insertion proximal part of linea aspera, action adducts flexes and laterally rotates thigh?

Answer 17

Adductor brevis

Question 18

What muscles origin is inferior ramus of pubis, insertion linea aspera of femur, action adducts flexes and laterally rotates thigh?

Answer 18

Adductor magnus

Question 19

What muscle of the medial compartment of the thigh crosses the knee joint?

Answer 19

Gracilis

Question 20

What muscles origin long head: Ischial tuberosity short head: distal part of linea aspera of femur, insertion lateral side of head of fibula, action flexes leg and rotates it laterally extends thigh?

Answer 20

Biceps femoris

Question 21

What muscles origin Ischial tuberosity, insertion posterior part of medial condyle of tibia, action flexes leg at knee?

Answer 21

Semimembranosus

Question 22

What muscles origin is Ischial tuberosity, insertion proximal portion of medial surface of body of tibia, action flexes leg at knee?

Answer 22

Semitendinosus

Question 23

What muscles of the posterior compartment of the thigh cross the knee joint?

Answer 23

•Biceps femoris
•Semitendinosus
•Semimembranosus

Question 24

What muscles origin is lateral condyle of femur, insertion upper posterior aspect of tibia, action weakly flexes leg and unlocks it?

Answer 24

Popliteus

Question 25

What is an anatomical term for the muscles of the leg?

Answer 25

Crural muscles

Question 26

How many compartments lie within the leg?

Answer 26

Three

Question 27

What are the compartments of the leg?

Answer 27

•Anterior •Lateral •Posterior

Question 28

What muscles origin is lateral condyle of tibia and superior 3/4 anterior surface of fibula, insertion extensor expansions of digits 2-5 , action extends digits 2-5 and dorsiflexes foot?

Answer 28

Extensor digitorum longus

Question 29

What muscles origin is middle part of anterior surface of fibula and interosseous membrane, insertion dorsal aspect of base of distal phalanx of digit 1, action extends great toe and assists dorsiflexion of foot?

Answer 29

Extensor hallucis longus

Question 30

What muscles origin is lateral condyle and superior half of lateral surface of tibia, insertion medial cuneiform bone and base of first metatarsal bone, action dorsiflexion of ankle and inversion of foot?

Answer 30

Tibialis anterior

Question 31

What muscles origin is head and superior 2/3 of lateral surface of fibula, insertion inferior aspects of medial cuneiform and base of first metatarsal, action plantar flexes and everts foot?

Answer 31

Fibularis longus

Question 32

What muscles origin is inferior 2/3 of lateral surface of fibula, insertion dorsal surface of tuberosity of fifth metatarsal, action everts foot and weakly plantar flexes foot?

Answer 32

Fibularis brevis

Question 33

What muscles origin is lateral head: lateral aspect of lateral condyle of femur medial head: popliteal surface of femur, insertion Achilles tendon, action plantar flexes foot raises heel during walking and flexes knee?

Answer 33

Gastrocnemius

Question 34

What muscles origin is posterior aspect of fibula and tibia, insertion Achilles tendon, action plantar flexes foot?

Answer 34

Soleus

Question 35

What muscles origin is lateral supracondylar ridge of femur, insertion Achilles tendon, action weakly assists gastrocnemius?

Answer 35

Plantaris

Question 36

What muscles origin is interosseous membrane, insertion inferior surfaces of navicular cuneiforms cuboid and bases of metatarsals 2-4, action plantar flexes and inverts foot supports arches?

Answer 36

Tibialis posterior (Tom)

Question 37

What muscles origin is medial part of posterior surface of tibia inferior to soleal line, insertion inferior surface of distal phalanges of digits 2-5, action flexes digits 2-5 and plantar flexes foot?

Answer 37

Flexor digitorum longus (Dick)

Question 38

What muscles origin is inferior 2/3 of posterior surface of fibula and inferior part of interosseous membrane, insertion inferior surface of base of distal phalanx of great toe, action flexes first digit and plantar flexes foot?

Answer 38

Flexor hallucis longus (Harry)