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Musculoskeletal System > Muscles of Leg > Flashcards

Muscles of Leg Flashcards

1
Q

THE LEG

A
  1. ANTERIOR:
    - Turn foot outward
  2. POSTERIOR:
    - Dorsiflexion foot and extension digits
  3. LATERAL:
    - Plantarflexion and flexion of digits

Anterior compartment= Deep Fibular Nerve
Lateral compartment= Superficial Fibular Nerve
Posterior Compartment = Tibial Nerve

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2
Q

TIBIALIS ANTERIOR (Origin)

A

Lateral surface Tibia
Interosseus Membrane

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3
Q

TIBIALIS ANTERIOR (Insertion)

A

Medial and Inferior surfaces Medial Cuneiform
Base first metatarsal

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4
Q

TIBIALIS ANTERIOR (Innervation)

A

Deep Fibular Nerve

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5
Q

TIBIALIS ANTERIOR (Action)

A

Dorsiflexion ankle joint
Inversion foot
Supports Medial arch foot

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6
Q

EXTENSOR DIGITORUM LONGUS (Origin)

A

Proximal 1/2 Anterior surface Fibula
Lateral condyle Tibia

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7
Q

EXTENSOR DIGITORUM LONGUS (Insertion)

A

Dorsal expansion Lateral 4 toes

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8
Q

EXTENSOR DIGITORUM LONGUS (Innervation)

A

Deep Fibular Nerve

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9
Q

EXTENSOR DIGITORUM LONGUS (Action)

A

Extension Lateral 4 toes
Dorsiflexion ankle

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10
Q

EXTENSOR HALLUCIS LONGUS (Origin)

A

Middle 1/2 Anterior surface shaft Fibula
Interosseus membrane

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11
Q

EXTENSOR HALLUCIS LONGUS (Insertion)

A

Dorsal surface base distal phalanx big toe

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12
Q

EXTENSOR HALLUCIS LONGUS (Innervation)

A

Deep Fibular Nerve

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13
Q

EXTENSOR HALLUCIS LONGUS (Action)

A

Extention big toe
Dorsiflexion ankle joint

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14
Q

FIBULARIS TERTIUS (Origin)

A

Distal part Medial surface Fibula

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15
Q

FIBULARIS TERTIUS (Insertion)

A

Dorsomedial surface base 5th metatarsal

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16
Q

FIBULARIS TERTIUS (Innervation)

A

Deep Fibular Nerve

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17
Q

FIBULARIS TERTIUS (Action)

A

Dorsiflexion ankle joint
Eversion foot

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18
Q

EXTENSOR RETINACULUM

A

SUPERIOR Extensor Retinacalum:
- Thickening deep fascia leg
- Superior to ankle joint
- Attached to Anterior surface Tibia and Fibula
INFERIOR Extensor Retinaculum:
- Y-shaped
- Base laterally to Calcaneus
- Crosses medially over foot
- Arms attach medial Malleolus and Plantar Aponeurosis

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19
Q

FIBULARIS LONGUS (Origin)

A

Proximal end Lateral surface Fibula

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20
Q

FIBULARIS LONGUS (Insertion)

A

Inferior surface Distal end Medial Cuneiform
Base first metatarsal

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21
Q

FIBULARIS LONGUS (Innervation)

A

Superficial Fibular Nerve

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22
Q

FIBULARIS LONGUS (Action)

A

Eversion foot
Plantarflexion ankle
Supports Lateral and Transverse arches

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23
Q

FIBULARIS BREVIS (Origin)

A

Distal 2/3 Lateral surface shaft Fibula

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24
Q

FIBULARIS BREVIS (Insertion)

A

Lateral Tubercle base 5th metatarsal

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25
Q

FIBULARIS BREVIS (Innervation)

A

Superficial Fibular Nerve

26
Q

FIBULARIS BREVIS (Action)

A

Eversion foot
Plantarflexion ankle

27
Q

FIBULAR RETINACULUM

A

SUPERIOR Fibular Retinaculum:
-Extends between Lateral Malleolus and Calcaneus
INFERIOR Fibular Retinaculum:
- Attaches Lateral surface Calcaneus
- Blends Inferior Extensor Retinaculum

28
Q

GASTROCNEMIUS (Origin)

A

MEDIAL Head
- Popliteal surface Medial condyle
LATERAL Head
- Posterlateral surface Lateral Femoral condyle

29
Q

GASTROCNEMIUS (Insertion)

A

Posterior surface Calcaneus via Calcaneal tendon

30
Q

GASTROCNEMIUS (Innervation)

A

Tibial Nerve

31
Q

GASTROCNEMIUS (Action)

A

Plantarflexion ankle joint (lifts heel when walking)
Assists flexion knee

32
Q

SOLEUS (Origin)

A

Soleal line and Medial border Tibia
Posterior surface head and neck of Fibula

33
Q

SOLEUS (Insertion)

A

Posterior surface Calcaneus via Calcaneal tendon

34
Q

SOLEUS (Innervation)

A

Tibial Nerve

35
Q

SOLEUS (Action)

A

Plantarflexion ankle joint

36
Q

PLANTARIS (Origin)

A

Inferior surface Lateral supracondylar line Femur
Oblique popliteal ligament

37
Q

PLANTARIS (Insertion)

A

Posterior surface Calcaneus via Calcaneal tendon

38
Q

PLANTARIS (Innervation)

A

Tibial Nerve

39
Q

PLANTARIS (Action)

A

Plantarflexion ankle joint

40
Q

FLEXOR HALLUCIS LONGUS (Origin)

A

Posterior surface Fibula
Interosseus membrane

41
Q

FLEXOR HALLUCIS LONGUS (Insertion)

A

Plantar surface Distal phalanx big toe

42
Q

FLEXOR HALLUCIS LONGUS (Innervation)

A

Tibial Nerve

43
Q

FLEXOR HALLUCIS LONGUS (Action)

A

Flexes big toe
Assists Plantarflexion
Supports Medial longitudinal arch during walking and running

44
Q

FLEXOR DIGITORUM LONGUS (Origin)

A

Medial side Posterior surface Tibia

45
Q

FLEXOR DIGITORUM LONGUS (Insertion)

A

Plantar surface bases Distal phalanges Lateral 4 toes

46
Q

FLEXOR DIGITORUM LONGUS (Innervation)

A

Tibial Nerve

47
Q

FLEXOR DIGITORUM LONGUS (Action)

A

Flexion Lateral toes during walking/running
Plantarflexion ankle joint
supports Medial longitudinal arch

48
Q

TIBIALIS POSTERIOR (Origin)

A

Lateral surface Posterior surface Tibial shaft
Medial surface Posterior surface Fibular shaft
Interosseus membrane

49
Q

TIBIALIS POSTERIOR (Insertion)

A

Tuberosity Navicular
- Adjacent surface Medial Cuneiform

50
Q

TIBIALIS POSTERIOR (Innervation)

A

Tibial Nerve

51
Q

TIBIALIS POSTERIOR (Action)

A

Inversion foot
Plantarflexion ankle joint
Supports Medial longitudinal arch

52
Q

POPLITEUS (Origin)

A

Lateral femoral condyle

53
Q

POPLITEUS (Insertion)

A

Posterior surface Proximal surface Tibia

54
Q

POPLITEUS (Innervation)

A

Tibial Nerve

55
Q

POPLITEUS (Action)

A

Stabilizes knee joint
Unlocks knee initiation flexion
Laterally Rotates Femur over Tibia
Pulls Meniscus backwards when knee flexed

56
Q

POPLITEAL FOSSA (Borders)

A
  1. SUPEROLATERAL
    - Biceps Femoris
  2. INFEROLATERAL
    - Lateral head Gastrocnemius
  3. SUPEROMEDIAL
    - Semimembranosus and Semitendinousus
  4. INFEROMEDIAL
    - Medial head Gastrocnemius
57
Q

POPLITEAL FOSSA (Roof)

A

Skin
Fascia
Opening of small Saphenous Vein

58
Q

POPLITEAL FOSSA (Floor)

A

Popliteal area
Joint capsule
Fascia covering Popliteus

59
Q

POPLITEAL FOSSA (Contents)

A

Popliteal Artery
Popliteal Vein
Tibial Nerve
Common Fibular Nerve
Lymphatic Vessels
Fat

60
Q

TARSAL TUNNEL

A

FLEXOR RETINACULUM
- Medial Malleolus Anteriorly
- Inferomedial margin Calcaneus Posteriorly
Tom, Dick And Very Nervous Harry
~ tendon of Tibialis posterior
~ flexor Digitorum Iongus
~ posterior tibial Artery
~ posterior tibial Vein
~ tibial Nerve
~ tendon of flexor Hallucis longus

Musculoskeletal System (17 decks)

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