Muscles LL Flashcards by Irene Fetherston

Compartment, Action, Innervation

Iliopsoas: psoas major

Compartment
Anterior thigh

Action
Flexes thigh

Innervation
Branches of Lumbar Plexus (L2 - L3)

Proximal Attachment
Transverse processes and bodies of T12 - L5 vertebrae
Distal Attachment
Lesser trochanter of femur with iliacus

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Compartment, Action, Innervation

Iliopsoas: iliacus

Compartment
Anterior thigh

Action
Flexes thigh

Innervation
Femoral n.

Proximal Attachment
Iliac fossa
Distal Attachment
Lesser trochanter of femur with psoas major

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Compartment, Action, Innervation

Sartorius

Compartment
Anterior thigh

Action
Flexes thigh and laterally rotates thigh; flexes leg and medially rotates leg

Innervation
Femoral n.

Proximal Attachment
Anterior superior iliac spine
Distal Attachment
Tibial tuberosity, medial side

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Compartment, Action, Innervation

Rectus femoris

Compartment
Anterior thigh

Action
Flexes thigh; extends leg

Innervation
Femoral n.

Proximal Attachment
Anterior inferior iliac spine
Distal Attachment
Quadriceps tendon to patella and then patellar ligament to tibial tuberosity

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Compartment, Action, Innervation

Adductor longus

Compartment
Medial thigh

Action
Adducts thigh; flexes thigh

Innervation
Obturator n.

Proximal Attachment
Pubis near pubic symphysis
Distal Attachment
Linea aspera of femur

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Compartment, Action, Innervation

Adductor brevis

Compartment
Medial thigh

Action
Adducts thigh; flexes thigh

Innervation
Obturator n.

Proximal Attachment
Inferior ramus and body of pubis
Distal Attachment
Upper third of linea aspera of femur

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Compartment, Action, Innervation

Gracilis

Compartment
Medial thigh

Action
Adducts and flexes thigh; flexes leg

Innervation
Obturator n.

Proximal Attachment
Inferior ramus and body of pubis
Distal Attachment
Upper medial surface of tibia

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Compartment, Action, Innervation

Pectineus

Compartment
Medial thigh

Action
Flexes thigh; adducts thigh

Innervation
Femoral n. or Obturator n.

Proximal Attachment
Pectineal line of pubis
Distal Attachment
Pectineal line of femur

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Compartment, Action, Innervation

Adductor magnus: Adductor portion

Adductor magnus: Adductor portion

Compartment
Medial thigh

Action
Adducts and flexes thigh

Innervation
Obturator n.

Proximal Attachment
Inferior ramus of pubis and ischial tuberosity
Distal Attachment
Adductor tubercle of femur

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Compartment, Action, Innervation

Adductor magnus: Hamstring portion

Adductor magnus: Hamstring portion

Compartment
Posterior thigh

Action
Adducts thigh, extends and laterally rotates thigh

Innervation
Obturator n.

Proximal Attachment
Inferior ramus of pubis and ischial tuberosity
Distal Attachment
Linea Aspera of femur

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Compartment, Action, Innervation

Tensor of Fasciae Latae

Compartment
Gluteal thigh

Action
Abducts thigh; medially rotates thigh

Innervation
Superior Gluteal n.

Proximal Attachment
Iliac crest and lateral surface of anterior superior iliac spine
Distal Attachment
Iliotibial band

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Compartment, Action, Innervation

Gluteus maximus

Compartment
Gluteal thigh

Action
Extends thigh; laterally rotates thigh

Innervation
Inferior Gluteal n.

Proximal Attachment
Iliac crest, sacrum, coccyx
Distal Attachment
Iliotibial tract of fascia lata; linea aspera and gluteal tuberosity of femur

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Compartment, Action, Innervation

Gluteus medius

Compartment
Gluteal thigh

Action
Abducts thigh; medially rotates thigh

Innervation
Superior gluteal nerve (L4 - S1)

Proximal Attachment
Posterior iliac crest; lateral surface between posterior and anterior gluteal lines
Distal Attachment
Greater trochanter of femur

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Compartment, Action, Innervation

Gluteus minimus

Compartment
Gluteal thigh

Action
Abducts thigh; medially rotates thigh

Innervation
Superior Gluteal n. (L4 - S1)

Proximal Attachment
Lateral surface of ilium between inferior and anterior gluteal lines
Distal Attachment
Greater trochanter of femur

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Compartment, Action, Innervation

Piriformis

Compartment
Gluteal thigh

Action
Laterally rotates thigh

Innervation
Nerve to Piriformis

Proximal Attachment
Anterolateral surface of sacrum
Distal Attachment
Greater trochanter

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Compartment, Action, Innervation

Biceps femoris: long head

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Biceps femoris: long head

Compartment
Posterior thigh

Action
Extends thigh, flexes leg, laterally rotates leg

Innervation
Tibial division of Sciatic n.

Proximal Attachment
Ischial tuberosity
Distal Attachment
Head of fibula

Compartment, Action, Innervation

Biceps femoris: short head

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Biceps femoris: short head

Compartment
Posterior thigh

Action
Flexes leg, laterally rotates leg

Innervation
Common Fibular division of Sciatic n.

Proximal Attachment
Linea aspera of femur
Distal Attachment
Head of fibula

Compartment, Action, Innervation

Semimembranosus

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Semimembranosus

Compartment
Posterior thigh

Action
Extends thigh and flexes leg; medially rotates leg

Innervation
Tibial division of Sciatic n.

Proximal Attachment
Ischial tuberosity
Distal Attachment
Posterior surface of medial condyle of tibia

Compartment, Action, Innervation

Semitendonosus

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Semitendonosus

Compartment
Posterior thigh

Action
Extends thigh and flexes leg; medially rotates leg

Innervation
Tibial division of Sciatic n.

Proximal Attachment
Ischial tuberosity
Distal Attachment
Proximal medial surface of tibia

Compartment, Action, Innervation

Vastus Intermedius

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Vastus Intermedius

Compartment
Anterior thigh

Action
Extends leg

Innervation
Femoral n.

Proximal Attachment
Anteriolateral surface of femur
Distal Attachment
Quadriceps tendon to patella and then patellar ligament to tibial tuberosity

Compartment, Action, Innervation

Vastus Lateralis

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Vastus Lateralis

Compartment
Anterior thigh

Action
Extends leg

Innervation
Femoral n.

Proximal Attachment
Greater trochanter and linea aspera
Distal Attachment
Quadriceps tendon to patella and then patellar ligament to tibial tuberosity

Compartment, Action, Innervation

Vastus Medialis

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Vastus Medialis

Compartment
Anterior thigh

Action
Extends leg

Innervation
Femoral n.

Proximal Attachment
Intertrochanteric line and linea aspera of the femur
Distal Attachment
Quadriceps tendon to patella and then patellar ligament to tibial tuberosity

Compartment, Action, Innervation

Fibularis tertius

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Fibularis tertius

Compartment
Anterior leg

Action
Dorsiflexes and weak evertor of foot

Innervation
Deep Fibular n.

Proximal Attachment
Anterior distal surface of fibula; interosseous membrane
Distal Attachment
Base of metatarsal V

Compartment, Action, Innervation

Tibialis anterior

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Tibialis anterior

Compartment
Anterior leg

Action
Dorsiflexes foot; inverts foot

Innervation
Deep Fibular n.

Proximal Attachment
Lateral condyle and proximal shaft of tibia; interosseous membrane
Distal Attachment
Metatarsal I and first (medial) cuneiform

# Compartment, Action, Innervation Fibularis longus

Fibularis longus **Compartment** Lateral leg **Action** Everts foot; weak plantar flexor **Innervation** Superficial Fibular n. **Proximal Attachment** Head and upper 2/3 of shaft fibula; lateral condyle of tibia **Distal Attachment** Base of metatarsal I; medial cuneiform

# Compartment, Action, Innervation Fibularis brevis

Fibularis brevis **Compartment** Lateral leg **Action** Everts foot; weak plantar flexor **Innervation** Superficial Fibular n. **Proximal Attachment** Midlateral shaft of fibula **Distal Attachment** Base of metatarsal V

# Compartment, Action, Innervation Gastrocnemius

Gastrocnemius **Compartment** Posterior/Superficial leg **Action** Flexes leg; plantar flexes foot **Innervation** Tibial n. **Proximal Attachment** Superior and posteiror surfaces of lateral and medial condyles of femur **Distal Attachment** Calcaneus (via calcaneal tendon)

# Compartment, Action, Innervation Soleus

Soleus **Compartment** Posterior/Superficial leg **Action** Plantar flexes foot **Innervation** Tibial n. **Proximal Attachment** Head and proximal shaft of fibula; medial border of tibia **Distal Attachment** Calcaneus (via calcaneal tendon)

# Compartment, Action, Innervation Flexor digitorum longus

Flexor digitorum longus **Compartment** Posterior/Deep leg **Action** Plantar flexes foot; flexes MP, PIP and DIP joints of toes 2-5 **Innervation** Tibial n. **Proximal Attachment** Posteromedial surface of tibia **Distal Attachment** Distal phalanges of toes 2-5

# Compartment, Action, Innervation Flexor hallucis longus

Flexor hallucis longus **Compartment** Posterior/Deep leg **Action** Plantar flexes foot; flexes MP, PIP and DIP joints of great toe (1) **Innervation** Tibial n. **Proximal Attachment** Posterior lower 2/3 of fibula **Distal Attachment** Distal phalanx of great toe (1)

# Compartment, Action, Innervation Tibialis posterior

Tibialis posterior **Compartment** Posterior/Deep leg **Action** Plantar flexes foot; inverts foot **Innervation** Tibial n. **Proximal Attachment** Fibula, tibia and interosseous membrane **Distal Attachment** Metatarsals II-IV; navicular bone; cuboid bone; all cuneiforms

# Compartment, Action, Innervation Extensor digitorum brevis

Extensor digitorum brevis **Compartment** Foot (dorsal) **Action** Extends MP and PIP joints of toes 2-4 **Innervation** Deep Fibular n. **Proximal Attachment** Calcaneus and inferior extensor retinaculum **Distal Attachment** Proximal phalanges of toes 2-4

# Compartment, Action, Innervation Extensor hallucis brevis

Extensor hallucis brevis **Compartment** Foot (dorsal) **Action** Extends MP joint of great toe (1) **Innervation** Deep Fibular n. **Proximal Attachment** Calcaneus and inferior extensor retinaculum **Distal Attachment** Proximal phalanx of great toe (1)

# Compartment, Action, Innervation Flexor digitorum brevis

Flexor digitorum brevis **Compartment** Foot (plantar 1) **Action** Felxes MP and PIP joints of toes 2-5 **Innervation** Medial Plantar n. **Proximal Attachment** Calcaneus **Distal Attachment** Middle phalanges of toes 2-5

# Compartment, Action, Innervation Lumbricals

Lumbricals **Compartment** Foot (plantar 2) **Action** Flexes MP joints and extends PIP and DIP joints of toes 2-5 **Innervation** Medial Plantar n. (1st lumbrical); Lateral Plantar n. (lumbricals 2-4) **Proximal Attachment** Tendons of flexor digitorum longus **Distal Attachment** Tendons of extensor digitorum longus

# Compartment, Action, Innervation Extensor digitorum longus

Extensor digitorum longus **Compartment** Anterior leg **Action** Extends toes 2-5; dorsiflexes foot **Innervation** Deep Fibular n. **Proximal Attachment** Lateral condyle of tibia; anterior surface of fibula; interosseous membrane **Distal Attachment** Distal phalanges of toes 2-5

# Compartment, Action, Innervation Extensor hallucis longus

Extensor hallucis longus **Compartment** Anterior leg **Action** Extends great toe (1); dorsiflexes foot **Innervation** Deep Fibular n. **Proximal Attachment** Anterior surface of fibula; interossesous membrane **Distal Attachment** Distal phalanx of great toe (1)

Muscles LL Flashcards

(37 cards)