Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Lower limbs > Leg muscles > Flashcards

Leg muscles Flashcards

1
Q

What can the leg’s compartments be divided into?

A

The anterior (extensor), posterior (flexor), and lateral (fibular).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What divides the leg into compartments?

A

The interosseus membrane and the two intermuscular septa (anterior and posterior)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are the superficial muscles of the posterior leg?

A

The gastrocnemius, plantaris, and soleus muscles.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What do the superficial posterior muscles do?

A

They plantarflex the foot and flex the knee.

Knee flex is excluded in the soleus muscle.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are the innervations of the posterior superficial muscles?

A

The tibial nerve.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What does the medial head of gastrocnemius attach to?

A

The medial femoral condyle.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What does the lateral head of gastrocnemius attach to?

A

The lateral epicondyle of the femur.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the origin of the plantaris muscle?

A

Inferior of the lateral supracondylar line and the oblique popliteal ligament.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the origin of the soleus muscle?

A

The head of fibula, the 1/3rd upper of the fibula, the 1/3rd of the tibia, the posterior of the tendinous arch.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What attaches the gastrocnemius, soleus, and plantaris muscle to the calcaneus bone?

A

The calcaneus (Achilles) tendon.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Where does the popliteus muscle originate from?

A

The lateral femoral condyle.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Where does the popliteus muscle insert to?

A

The posterior of proximal tibia.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the innervation for the popliteus muscle?

A

Tibial nerve (L4-S1).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the function of popliteus?

A

Stabilizes and unlocks the knee joint by lateral femur rotation during knee extension.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Where does flexor hallicis longus originate from?

A

The posterior of the fibula.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Where does the flexor hallicis longus insert?

A

The plantar surface of the distal phalanges of the great toe.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is the function of flexor hallicis longus?

A

To flex the great toe.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is the origin of flexor digitorum longus?

A

The posterior of the tibia.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What does the flexor digitorum longus muscle attach to?

A

Plantar bases of distal phalanges of the lateral 4 toes.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What does the tibialis posterior muscle originate from?

A

The interosseus membrane and adjacent bones.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What is the attachment of the tibialis posterior muscle?

A

The navicular tuberosity and adjacent medial cuneiform bones.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What are the 2 muscles that cause eversion of the foot?

A

Fibularis longus and brevis.

Remember that they attach to the posterior of the fibula lateral to the malleolar fossa.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What is the insertion of fibularis brevis?

A

The base of metatarsal V

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What is the innervation of fibularis longus/brevis?

A

The superficial fibular nerve (L5, S1, S2).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

What is the function of fibularis brevis?

A

Eversion.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

What is the function of fibularis longus?

A

Eversion, plantarflexion, and stabilizes the arch of the foot.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

What is the function of fibularis brevis?

A

Eversion.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

What is the origin of tibialis anterior?

A

The lateral surface of tibia and the adjacent interosseus membrane.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

What is the insertion of the tibialis anterior?

A

Medial cuneiform and the base of metatarsal I

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

What is the function of tibialis anterior?

A

Dorsoflexion, inversion, support of the medial arch.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

What is the origin of extensor digitorum longus?

A

Proximal one half of fibula and lateral tibial condyle.

32
Q

What is the origin of extensor hallucis longus?

A

Middle half of tibia and related interosseus membrane.

33
Q

What is the insertion of extensor digitorum longus?

A

Dorsal of the four lateral toes.

34
Q

What is the insertion of extensor hallucis longus?

A

Dorsal of the great toe.

35
Q

What is the function of the extesnor hallucis and digitorum longus?

A

Eversion and extension of their respective attachments.

36
Q

What is the fibularis tertius’ origin?

A

The distal part of fibula.

37
Q

What is the fibularis tertius muscle’s insertion?

A

Dorsomedial surface of metatarsal V.

38
Q

What is the function of fibularis tertius?

A

Eversion and dorsoflexion.

40
Q

What is the first intrinsic foot group muscles?

A

Abductor hallucis, flexor digitorum brevis, abductor digiti minimi.

41
Q

What is the origin of abductor hallucis?

A

The medial calcaneal process.

42
Q

What is the insertion of abductor hallucis?

A

Medial aspect of base of proximal great toe phalanges.

43
Q

What is the innervation of abductor hallucis?

A

Medial plantar nerve.

44
Q

What is the function of abductor hallucis?

A

Abducts and flexes the great toe.

45
Q

What is the origin of flexor digitorum brevis?

A

Medial and lateral calcaneal process.

46
Q

What is the insertion of flexor digitorum brevis?

A

The middle phalanges of lateral 4 toes.

47
Q

What is the function of flexor digitorum brevis?

A

Flexes the 4 lateral toes.

48
Q

What is the innervation of the flexor digitorum brevis?

A

Medial plantar nerve.

49
Q

What is the origin of abductor digiti minimi?

A

Medial and lateral calcaneal process.

50
Q

What is the insertion of the abductor digiti minimi?

A

Lateral of the proximal phalanges of the little toe

51
Q

What is the function of abductor digiti minimi?

A

Abduction of little toe.

52
Q

What is the second layer of the intrinsic foot muscle?

A

Quadratus plantae and the lumbricals.

53
Q

What is the origin of quadratus plantae?

A

The medial calcaneal surface and lateral calcaneal process.

54
Q

What is the insertion of quadratus plantae?

A

The lateral of flexor digitorum longus tendon.

55
Q

What is the function of quadratus plantae?

A

Helps flexor digitorum longus.

56
Q

What is the innervation of quadratus plantae?

A

Lateral plantar nerve.

57
Q

What is the origin of the lumbricals?

A

The first lumbrical originates from the medial aspect of FDL tendons associated with toe II, while the second to forth lumbrical originates from the adjacent FDL tendons.

58
Q

What is the insertion of the lumbricles?

A

Medial free margin of toes II to V.

59
Q

What is the function of the lumbricals?

A

Flexion of m/p joint and extension of i/p joint.

60
Q

What is the innervation of the lumbricals?

A

The first lumbrical from the medial plantar nerve, the second to forth lumbrical from the lateral plantar nerve.

61
Q

What is the origin of adductor hallucis?

A

Transverse - metatarsophalangeal ligament of lateral third toes
Oblique - bases of metarsal II-IV and fibularis longus tendon sheath

62
Q

What is the insertion of adductor hallucis?

A

Lateral of proximal phalanx base of great toe.

63
Q

What is the innervation of adductor hallucis?

A

Lateral plantar nerve.

64
Q

What is the function of adductor hallucis?

A

Adducts great toe.

65
Q

What is the origin of flexor hallucis longus?

A

Medial cuneiform and cuboid bone.

66
Q

What is the insertion of flexor hallucis brevis?

A

Lateral and medial of base of proximal phalanx of great toe.

67
Q

What is the innervation of flexor hallucis brevis?

A

The medial plantar nerve.

68
Q

What is the origin of flexor digiti minimi brevis?

A

Base of metatarsal V and related sheath of fibularis longus tendon.

69
Q

What is the insertion of flexor digiti minimi brevis?

A

Lateral of the small toe.

70
Q

What is the forth layer of foot muscle?

A

Dorsal interosseus and plantar interosseus.

71
Q

What is the origin of dorsal interosseus muscle?

A

Sides of adjacent metatarsals.

72
Q

What is the insertion of dorsal interosseus muscle?

A

Extensor hoods and base of proximal phalanges II-IV.

73
Q

What is the innervation of dorsal interosseus muscle?

A

Proper digital nerve of the lateral nerve (IV-V) and deep branch of the lateral nerve (I-III) and deep fibular nerve (I-II).

74
Q

What is the origin of plantar interosseus?

A

Medial sides of metatarsals III-V.

75
Q

What is the insertion of plantar interosseus?

A

Extensor hoods and base of proximal phalanges III-V.

76
Q

What is the innervation of plantar interosseus?

A

Proper digital plantar nerve of the lateral nerve (IV-V) and deep branch of the lateral plantar nerve (I-III).

Lower limbs (28 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions