Flashcards in Leg Muscles Deck (59):
1
muscles of anterior compartment of leg
tibialis anterior
extensor hallucis longus
entensor digitorum ongus
peroneus tertius
2
tibialis anterior
-origin
lateral condyle of tibia
superior 1/2 of lateral tibia
3
tibialis anterior
-insertion
medial and inferior surface of
-medial cuneiform
-1st metatarsal
4
tibialis anterior
-actions
foot dorsiflexion
foot inversion
supports the medial longitudinal arch
5
tibialis anterior
-innervation
deep fibular nerve (L4, L5)
6
extensor hallucis longus
-origin
middle part of anterior surface of fibula
interosseus membrane
7
extensor hallucis longus
-insertion
dorsal aspect of base of distal phalanx of hallux
8
extensor hallucis longus
-actions
hallux extension
foot dorsiflexion
9
extensor hallucis longus
-innervation
deep fibular (L4, L5)
10
entensor digitorum longus
-origin
lateral condyle of tibia
superior 3/4 of anterior surface of fibula
interosseus membrane
11
entensor digitorum longus
-insertion
middle and distal phalanges of lateral 4 digits
12
entensor digitorum longus
-actions
extends lateral 4 digits
dorsiflexes foot
13
entensor digitorum longus
-innervation
deep fibular (L4, L5)
14
peroneus (fibular) tertius
-origin
inferior 1/3 of anterior surface of fibula
interosseus membrane
15
peroneus (fibular) tertius
-insertion
dorsum of base of 5th metatarsal
16
peroneus (fibular) tertius
-actions
foot dorsiflexion
aids in foot eversion
17
peroneus (fibular) tertius
-innervation
deep fibular (L4, L5)
18
muscle of lateral compartment of leg
peroneus longus
peroneus brevis
19
peroneus (fibular) longus
-origin
head and superior 2/3 of lateral surface of fibula
20
peroneus (fibular) longus
-insertion
base of first metatarsal
medial cuneiform
21
peroneus (fibular) longus
-actions
foot eversion
weak foot plantarflexion
tendon supports
-transverse arch
-medial longitudinal arch
-lateral longitudinal arch
22
peroneus (fibular) longus
-innervation
superficial fibular (L5, S1, S2)
23
peroneus brevis
-origin
inferior 2/3 of lateral surface of fibula
24
peroneus brevis
-insertion
dorsal surface of tuberosity on lateral side of base of 5th metatarsal
25
peroneus brevis
-actions
foot eversion
weak plantarflexion
26
peroneus brevis
-innervation
superficial fibular nerve (L5, S1, S2)
27
muscles of the superficial posterior compartment of the leg
gastrocnemius
soleus
plantaris
28
gastrocnemius
-origin
lateral head
-lateral aspect of lateral condyle of femur
medial head
-popliteal surface of femur, superior to medial condyle
29
gastrocnemius
-insertion
posterior surface of calcaneus via tendo calcaneus
30
gastrocnemius
-actions
plantar flexes foot
raises heel during walking
flexes knee
31
gastrocnemius
-innervation
tibial nerve (S1, S2)
32
soleus
-origin
posterior aspect of head of fibula
superior 1/4 of fibula
soleal line
medial border of tibia
33
soleus
-insertion
posterior surface of calcaneus via tendo calcaneus
34
soleus
-actions
plantar flexes foot
raises heel during walking
35
soleus
-innervation
tibial nerve (S1, S2)
36
plantaris
-origin
inferior end of lateral supracondylar line of femur
oblique popliteal ligament
37
plantaris
-insertion
fuses with tendo calcaneus
38
plantaris
-action
weakly assists in plantarflexion and flexion of knee
39
plantaris
-innervation
tibial nerve (S1, S2)
40
muscles of the deep posterior compartment of the leg
popliteus
flexor hallucis longus
flexor digitorum longus
tibialis posterior
41
popliteus
-origin
lateral surface of lateral condyle of femur and lateral meniscus
42
popliteus
-insertion
posterior surface of tibia superior to soleal line
43
popliteus
-actions
weakly flexes knee
unlocks knee
-rotates femur laterally on fixed tibia
-rotates tibia medially on fixed femur
44
popliteus
-innervation
tibial nerve (L4, L5, S1)
45
flexor hallucis longus
-origin
inferior 2/3 of posterior surface of fibula
inferior part of interosseus membrane
46
flexor hallucis longus
-insertion
base of distal phalanx of hallux
47
flexor hallucis longus
-action
flexes hallux at all joints
plantar flexes foot
supports longitudinal arch of foot
48
flexor hallucis longus
-innervation
tibial nerve (S2, S3)
49
flexor digitorum longus
-origin
medial part of posterior surface of tibia inferior to soleal line
to fibula via broad aponeurosis
50
flexor digitorum longus
-insertion
bases of distal phalanges of lateral 4 digits
51
flexor digitorum longus
-actions
flexes lateral 4 digits
plantarflexes foot
suports medial longitudinal arch of foot
52
flexor digitorum longus
-innervation
tibial nerve (S2, S3)
53
tibialis posterior
-origin
interosseus membrane
posterior surface o tibia inferior to soleal line
posterior surface of fibula
54
tibialis posterior
-insertion
tuberosity of navicular
all three cuneiform bones (and cuboid bone?)
bases of 2nd, 3rd, 4th metatarsals
55
tibialis posterior
-actions
plantarflexes foot
inverts foot
supports
-transverse arch
-medial longitudinal arch
56
tibialis posterior
-innervation
tibial nerve (L4, L5)
57
muscles that support medial longitudinal arch
tibialis anterior
peroneus longus
flexor hallucis longus
flexor digitorum longus
tibialis posterior
58
muscles that support lateral longitudinal arch
peroneus longus
flexor hallucis longus?
59