Lower Extremity Muscles/ Actions

Question 1

Gluteus maximus

Answer 1

Extends thigh, laterally rotates thigh, abducts thigh

Question 2

Gluteus medius

Answer 2

Abducts thigh, medially rotates thigh, stabilizes pelvis

Question 3

Rectus femoris

Answer 3

Extends leg, flexes thigh

Question 4

Vastus lateralis/ medialis

Answer 4

Extends leg

Question 5

Gracilis

Answer 5

Adducts thigh, flexes leg

Question 6

Adductors

Answer 6

Adducts thigh, flexes thigh, medially rotates thigh

Question 7

Pectineus

Answer 7

Flexes thigh, adducts thigh

Question 8

Iliopsoas

Answer 8

Flexes thigh/trunk (PM), psoas portion also does lateral flexion of vertebral column

Question 9

Sartorius

Answer 9

Flexes leg, flexes thigh, abducts thigh, laterally rotates thigh

Question 10

Tensor fasciae latae

Answer 10

Flexes thigh, abducts thigh, medially rotates thigh

Question 11

Biceps femoris

Answer 11

Flexes leg, extends thigh

Question 12

Semitendinosus

Answer 12

Flexes leg, extends thigh

Question 13

Semimembranosus

Answer 13

Flexes leg, extends thigh

Question 14

Tibialis anterior

Answer 14

Dorsiflexes foot (PM), inverts foot

Question 15

Extensor digitorum longus

Answer 15

Dorsiflexes foot, Extends toes (PM) at metatarsophalangeal joint

Question 16

Fibularis (Peroneus) longus

Answer 16

Plantar flexes foot, everts foot

Question 17

Gastrocnemius

Answer 17

Plantarflexes foot, flexes leg

Question 18

Soleus

Answer 18

Plantarflexes foot