Lower Extremity 1 - Pelvic Girdle, Anterior and Medial Thigh and Leg

Question 1

Muscles of the Thigh (Anterior Comp.)

Answer 1

Sartorius
Rectus Femoris
Vastus lateralis
Vastus medialis
Vastus intermedius

Question 2

Origin and insertion of sartorius

Answer 2

O - ASIS

I - medial side of tibia

Question 3

Action and innervation of sartorius

Answer 3

A - flexes and laterally rotates thigh and leg

I - femoral nerve

Question 4

Origin and insertion of rectus femoris

Answer 4

O - AIIS

I - patellar ligament to tibia

Question 5

Action and innervation of rectus femoris

Answer 5

A - extends leg, flexes thigh

I - femoral nerve

Question 6

Origin and insertion of vastus lateralis, intermedius and medialis

Answer 6

O - femur

I - patellar ligament to tibia

Question 7

Action and innervation of vastus lateralis, intermedius and medialis

Answer 7

A - extends leg

I - femoral nerve

Question 8

Muscles of the Medial Thigh

Answer 8

Adductor longus
Adductor brevis
Adductor magnus
Gracilis
Pectineus

Question 9

Origin and Insertion of adductor longus

Answer 9

O - pubis

I - femur

Question 10

Action and Innervation of adductor longus

Answer 10

A - adducts and rotates thigh

I - obturator nerve

Question 11

Origin and insertion of adductor brevis

Answer 11

O - pubis

I - femur

Question 12

Action and innervation of adductor brevis

Answer 12

A - adducts thigh

I - obturator nerve

Question 13

Origin and insertion of adductor magnus

Answer 13

O - pubis and ishium

I - femur

Question 14

Action and innervation of adductor magnus

Answer 14

A - adducts and rotates thigh

I - obturator nerve

Question 15

Origin and insertion of gracilis

Answer 15

O - pubis

I - tibia

Question 16

Action and innervation of gracilis

Answer 16

A - adducts thigh, flexes leg

I - obturator nerve

Question 17

Origin and insertion of pectineus

Answer 17

O - pubis

I - femur

Question 18

Action and innervation of pectineus

Answer 18

A - adducts and flexes thigh

I - obturator nerve

Question 19

Muscles of the Leg (ant. and lateral)

Answer 19

Tibialis anterior
Extensor digitorum longus
Extensor hallucis longus
Fibularis muscle (tertius, longus, brevis)

Question 20

Origin and insertion of tibialis anterior

Answer 20

O - lateral condyle of tibia and interosseous membrane

I - tarsals and metatarsals

Question 21

Action and innervation of tibialis anterior

Answer 21

A - dorsiflexion and inversion of foot, arch support

I - deep fibular nerve

Question 22

Origin and insertion of extensor digitorum longus

Answer 22

O - lateral condyle of tibia and fibula

I - phalanges

Question 23

Action and innervation of extensor digitorum longus

Answer 23

A - dorsiflexion of foot

I - extend toes

Question 24

Origin and insertion of extensor hallucis longus

Answer 24

O - interosseous membrane and fibula

I - hallux

Question 25

Action and innervation of extensor hallucis longus

Answer 25

A - dorsiflexion of foot, extend hallux

I - deep fibular nerve

Question 26

Origin and Insertion of fibularis muscles

Answer 26

O - fibula

I - tarsals and metatarsals

Question 27

Action and innervation of fibularis muscles

Answer 27

A - dorsiflexion and eversion of foot

I - deep fibular nerve