Group 2 Muscles

Question 1

Plantaris origin

Answer 1

Lateral supracondylar ridge of the femur.

Question 2

Plantaris insertion

Answer 2

Medial aspect of the posterior surface of the calcaneus.

Question 3

Plantaris action

Answer 3

Flexion of the knee. Plantarflexion.

Question 4

Plantaris innervation

Answer 4

Tibial Nerve

Question 5

Soleus origin

Answer 5

-posterior surface of the head and upper 1/3 of the shaft of the fibula; -middle 1/3 of the medial border of the tibia, tendinous arch between tibia and fibula.

Question 6

Soleus insertion

Answer 6

calcaneus

Question 7

Soleus action

Answer 7

-Plantar flexion -Reversed origin insertion action: when standing, the calcanius becomes the fixed origin of the muscle; -stabilizes the tibia on the calcaneus limiting forward sway.

Question 8

Soleus innervation

Answer 8

Tibial nerve

Question 9

Gastrocnemius origin

Answer 9

lateral and medial condyle of femur.

Question 10

Gastrocnemius insertion

Answer 10

tendo calcaneus (achilles tendon) into mid-posterior calcaneus

Question 11

Gastrocnemius action

Answer 11

Flexion of the knee. Plantarflexion.

Question 12

Gastrocnemius innervation

Answer 12

Tibial nerve

Question 13

Fibularis Brevis origin

Answer 13

Lower two-thirds of lateral fibula

Question 14

Fibularis Brevis insertion

Answer 14

Fifth metatarsal

Question 15

Fibularis Brevis action

Answer 15

Plantarflexion, eversion

Question 16

Fibularis Brevis innervation

Answer 16

Superficial fibular nerve

Question 17

Fibularis Longus origin

Answer 17

Upper lateral shaft of fibula

Question 18

Fibularis Longus insertion

Answer 18

first metatarsal, medial cuneiform

Question 19

Fibularis Longus action

Answer 19

plantarflexion, eversion, support arches

Question 20

Fibularis Longus innervation

Answer 20

Superficial fibular (peroneal) nerve