muscles of the leg

Question 1

what is a compartment

Answer 1

package of muscles wrapped together by connective tissue

Question 2

what are the 4 compartments of the leg

Answer 2

• anterior
• lateral
• superficial
• deep

Question 3

name the highlighted muscle, origin, insertion, and movement

Answer 3

• tibialis anterior
• insertion: base of first metatarsal and medial cuneiform
• origin: lateral proximal tibia, tibial condyle
• movement: dorsiflexion, inversion

Question 4

name the highlighted muscle, origin, insertion and movement

Answer 4

• extensor digitorum longus
• origin: head of fibula, lateral tibia condyle
• insertion: lateral 4 toes
• movement: dorsifelxion, eversion, extension of IP joints

Question 5

name the highlighted muscle, origin, insertion, and movement

Answer 5

• extensor hallicus longus
• origin: interosseous membrane
• insertion: base of distal phalanx of toe 1
• movement: dorsiflexion, extension of IP joints

Question 6

name the highlighted muscle, origin, insertion, and movement

Answer 6

• tibialis posterior
• origin: interosseous membrane
• insertion: navicular tuberosity, base of 2-4 metatarsal, medial cuneiform
• movement: plantar flexion, inversion

Question 7

name the muscle, origin, insertion, and movement

Answer 7

• flexor hallicus longus
• origin: interosseous membrane
• insertion: base of distale phalanx of toe 1
• movement: plantarflexion, inversion, plantarflexion of the MTP and IP joints

Question 8

name the muscle, origin, insertion, and movement

Answer 8

• flexor digitorum longus
• origin: posterior surface of tibia
• insertion: base of distal phalange of toes 2-5
• movement: plantarflexion, inversion, plantarflexion of MTP and IP joints

Question 9

which 3 muscles form the achilies tendon?

Answer 9

1. gastrocnemius
2. soleus
3. plantaris

Question 10

name the muscle, origin, insertion, movement

Answer 10

• gastrocnemius
• origin: medial and lateral femoral condyles
• insertion: calcaneus (through achilies tendon)
• movement: plantarflexion, knee flexion

Question 11

does the gastrocnemius cross a joint? if so, what joint?

Answer 11

yes, crosses knee joint

Question 12

name the muscle, origin, insertion, movement

Answer 12

• soleus
• origin: posterior surface of tibia and fibula
• insertion: calcaneus (via achillies tendon)
• movement: plantarflexion

Question 13

name the muscle, origin, insertion, and movement

Answer 13

• plantaris
• origin: lateral femoral condyle
• insertion: calcaneus (via achillies tendon)
• movement: plantarflexion, knee flexion

Question 14

does the plantaris cross a joint? if so what joint?

Answer 14

yes, knee joint

Question 15

name the muscle, origin, insertion, movement

Answer 15

• fibularis longus
• origin: lateral fibula head
• insertion: base of first metatarsal
• movement: plantarflexion, eversion

Question 16

name the muscle, origin, insertion, and movement

Answer 16

• fibularis brevis
• origin: lateral side of fibula
• insertion: base of 5th metatarsal
• movement: plantarflexion, eversion

Question 17

name the muscle, origin, insertion, and movement

Answer 17

• fibularis taritus
• origin: anterior surface of fibula
• insertion: dorsal base of 5th metatarsal
• movement: dorsiflexion, eversion