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EXCI 253 (anatomy) > O/I/A/In.: Muscles of lower extremity > Flashcards

O/I/A/In.: Muscles of lower extremity Flashcards

1
Q

Psoas Major

A

O: Transverse processes/bodies of lumbar vertebrae
I: lesser trochanter of femur
A: Flexion + lateral rotation of thigh at hip, and flexion of trunk on hip
In: lumbar spinal n. L2-L3

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2
Q

Psoas Minor

A

O: T12-L1
I: Iliopectineal line or fused w/ psoas maj.
A: Flexion of pelvis on abdomen
In: Lumbar plexus

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3
Q

Iliacus

A

O: Iliac fossa + sacrum
I: Tendon of psoas maj. (lesser troch)
A: Flexion + lateral rotation of thigh at hip
In: Femoral n.

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4
Q

Gluteus maximus

A

O: Iliac crest + post. gluteal line + sacrum + coccyx
I: IT of TFL + Gluteal tuberosity of femur
A: Extension + lateral rotation of thigh
In: inf. gluteal n.

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5
Q

Gluteus medius

A

O: Btwn ant. and post. gluteal lines
I: Greater trochanter of femur
A: Abduction + medial rotation of thigh
In: sup. gluteal n.

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6
Q

Gluteus minimus

A

O: btwn ant. and inf. gluteal lines
I: greater trochanter
A: abduction + medial rotation of thigh
In: sup. gluteal n.

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7
Q

Tensor Fascia Latae

A

O: ASIS + iliac crest
I: IT which attaches to lateral tibia
A: Flexion + abduction of thigh at hip
In: sup. gluteal n.

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8
Q

Piriformis

A

O: Ant. surface of sacrum
I: Greater trochanter
A: Lateral rotation + abduction of thigh
In: Sacral plexus

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9
Q

Superior Gemellus

A

O: ischial spine
I: Greater trochanter
A: Lateral rotation + abduction of thigh
In: Lumbosacral plexus

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10
Q

Obturator Internus

A

O: inner surface of obturator foramen + pubis + ischium
I: greater trochanter
A: Lateral rotation + abduction of thigh
In: Lumbosacral plexus

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11
Q

Inferior gemellus

A

O: Ischial tuberosity
I: Greater trochanter
A: Lateral rotation + abduction of thigh
In: Lumbosacral plexus

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12
Q

Quadratus femoris

A

O: ischial tuberosity
I: quadrate tubercle of femur
A: lateral rotation of thigh
In: Lumbosacral plexus

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13
Q

Obturator externus

A

O: outer surface of obturator foramen + membrane
I: trochanteric fossa of femur
A: lateral rotation + abduction of thigh
In: Obturator n.

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14
Q

Sartorius

A

O: ASIS
I: proximal, medial shaft of tibia
A: Flexion + abduction + lateral rotation of thigh at hip; flexion of knee
In: Femoral n.

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15
Q

Rectus Femoris

A

O: AIIS
I: Patella (quadriceps tendon) then tibial tuberosity (patellar lig)
A: Flexion at hip; Extension at knee
In: Femoral n.

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16
Q

Vastus Lateralis

A

O: Greater trochanter + lateral margin of linea aspera of femur
I: Patella + tib tub
A: Knee extension
In: Femoral n.

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17
Q

Vastus Medialis

A

O: medial margin of linear aspera
I: Patella + tib tub
A: Extension of knee
In: Femoral n.

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18
Q

Vastus Intermedius

A

O: Ant. + lat. shaft of femur
I: Patella + tib tub
A: Extension of knee
In: Femoral n.

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19
Q

Pectineus

A

O: Superior ramus of pubis
I: Pectineal line of femur
A: Flexion + adduction at hip
In: Femoral n.

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20
Q

Adductor Brevis

A

O: Inferior ramus of pubis
I: Superior half of linea aspera
A: adduction + flexion + rotation at hip
In: Obturator n.

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21
Q

Adductor Longus

A

O: Pubic crest + symphysis
I: Linea aspera
A: Adduction + flexion + rotation at hip
In: Obturator n.

22
Q

Adductor Magnus

A

O: Inferior ramus of pubis + ischium to ischial tuberosity
I: Linear aspera and adductor tubercle of femur
A: adduction + rotation + flexion (ant. fibers) + extension (post. fibers) at hip
In: Obturator n. + sciatic n.

23
Q

Adductor Minimus

A

O: Inferior ramus of pubis
I: Medial lip of linea aspera
A: adduction + lateral rotation at hip
In: Obturator n.

24
Q

Gracilis

A

O: Body + inferior ramus of pubis
I: Proximal, medial shaft of tibia
A: adduction at hip; flexion + medial rotation at knee
In: Obturator n.

25
Q

Biceps femoris

A

O:
- Long head: Ischial tuberosity
- Short head: linea aspera of femur
I: Head of fibula + lateral condyle of tibia
A: Extension at hip (long head only) + flexion at knee
In: Sciatic n. (tibial + common fibular n.)

26
Q

Semitendinosus

A

O: Ischial tuberosity
I: Proximal, medial shaft of tibia
A: Extension at hip + flexion at knee
In: sciatic n. (tibial n.)

27
Q

Semimembranosus

A

O: Ischial tuberosity
I: Medial condyle of tibia
A: Extension at hip + flexion at knee
In: Sciatic n. (tibial n.)

28
Q

Tibialis anterior

A

O: Lateral condyle + shaft of tibia + interosseous membrane
I: 1st metatarsal + 1st cuneiform
A: Dorsiflexion of foot + inversion
In: Deep fibular n.

29
Q

Extensor hallucis longus

A

O: Ant. fibula + interosseous membrane
I: Distal phalanx of 1st toe
A: Dorsiflexion of foot + Extension of 1st toe
In: Deep fibular n.

30
Q

Extensor digitorum longus

A

O: Ant. fibula + Lateral condyle of tibia + interosseous membrane
I: Middle and distal phalanges of toes 2-5
A: Dorsiflexion of foot + Extension of digits 2-5
In: Deep fibular n.

31
Q

Fibularis Tertius

A

O: Distal 1/3 of fibula + interosseous membrane
I: Base of 5th metatarsal
A: Dorsiflexion + eversion
In: Deep fibular n.

32
Q

Gastrocnemius

A

O: lateral + medial condyles of femur
I: Calcaneus (calcaneal tendon)
A: Plantarflexion of foot + flexion at knee
In: Tibial n.

33
Q

Soleus

A

O: Head of fibula + soleal line of tibia
I: Calcaneus (calcaneal tendon)
A: Plantarflexion
In: Tibial n.

34
Q

Plantaris

A

O: Lateral supracondylar ridge of femur
I: Calcaneus (calneal tendon)
A: Plantarflexion + flexion at knee
In: Tibial n.

35
Q

Popliteus

A

O: Lateral condyle of femur
I: Tibia above popliteal line
A: Flexion + medial rotation at knee; unlock extended knee
In: Tibial n.

36
Q

Tibialis posterior

A

O: Post. tibia + post. fibula + interosseous membrane
I: Navicular cuboid + 3 cuneiforms + bases of metatarsals 2-4
A: Plantarflexion + inversion
I: Tibial n.

37
Q

Flexor Digitorum longus

A

O: Posterior tibia
I: Distal phalanges 2-5
A: Plantarflexion of foot + flexion of digits 2-5
In: Tibial n.

38
Q

Flexor Hallucis Longus

A

O: Distal 2/3 of fibula
I: Distal phalanx of 1st toe
A: Flexion of 1st toe + plantarflexion of foot
In: Tibial n.

39
Q

Fibularis Longus

A

O: Head + proximal 2/3 of fibula
I: 1st metatarsal + 1st cuneiform
A: plantarflexion + eversion of foot
In: Superficial fibular n.

40
Q

Fibularis Brevis

A

O: Distal 2/3 of fibula
I: Base of 5th metatarsal
A: Plantarflexion + eversion of foot
In: Superficial fibular n.

41
Q

Extensor digitorum brevis (innervation)

A

In: Deep fibular n.

42
Q

Extensor Hallucis brevis (innervation)

A

In: Deep fibular n.

43
Q

Flexor digitorum brevis (Innervation)

A

Medial plantar n.

44
Q

Abductor hallucis (Innervation)

A

Medial plantar n.

45
Q

Abductor Digiti minimi (innervation)

A

lateral plantar n.

46
Q

Quadratus plantae (Action + innervation)

A

A: Flexion of toes 2-5
In: Lateral plantar n.

47
Q

Lumbricals (Action + innervation)

A

A: flexion of proximal phalanges; extension of middle + distal phalanges of toes 2-5
In: Medial + lateral plantar n.

48
Q

Flexor hallucis brevis (innervation)

A

In: Medial plantar n.

49
Q

Adductor hallucis (oblique + transverse heads) (innervation)

A

In: Lateral plantar n.

50
Q

Flexor digiti minimi brevis (innervation)

A

In: Lateral plantar n.

51
Q

Dorsal interossei (4) (action + innervation)

A

A: Abduction of toes
In: Lateral plantar n.

52
Q

Plantar interossei (3) (action + innervation)

A

A: Adduction of toes
In: Lateral plantar n.

EXCI 253 (anatomy) (18 decks)

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