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S&F1 > Lower Extremity Muscles > Flashcards

Lower Extremity Muscles Flashcards

Learn the info from Zill's charts: O, I, A, Inn

1
Q

Iliopsoas

A

Ilium, Vertebra (T12-L5) / Femur

Flex hip

femoral nerve

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2
Q

Pectineus

A

Pubis / Femur

flex hip

femoral nerve

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3
Q

Sartorius

A

Ilium (ant. sup. iliac spine) / Tibia

flex hip, flex knee

femoral nerve

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4
Q

Rectus Femoris

A

Ilium (ant. inf. iliac spine) / Patella

flex hip, extend knee

femoral nerve

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5
Q

Vastus lateralis

A

femur / patella

extend knee

femoral nerve

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6
Q

Vastus medialis

A

femur / patella

extend knee

femoral nerve

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7
Q

Vastus intermedius

A

femur / patella

extend knee

femoral nerve

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8
Q

Gracilis

A

Pubis / tibia

adduct hip, flex knee

obturator nerve

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9
Q

Adductor longus

A

pubis / femur (linea aspera)

adduct hip

obturator nerve

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10
Q

Adductor brevis

A

pubis / femur (linea aspera)

adduct hip

obturator nerve

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11
Q

Adductor magnus (adductor portion)

A

pubis, ischium / femur (linea aspera)

adduct hip

obturator nerve

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12
Q

Adductor magnus (hamstring portion)

A

Ischial tuberosity / femur (adductor tubercle)

extend hip

sciatic nerve (tibial part)

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13
Q

Obturator externus

A

obturator membrane / femur

laterally rotate femur at hip joint

obturator nerve

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14
Q

Gluteus maximus

A

ilium, sacrum, coccyx, sacrotuberous ligament / femur, iliotibial tract

extend hip, laterally rotate femur (also keeps leg extended via IT tract)

Inferior gluteal nerve

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15
Q

Gluteus medius

A

ilium / femur (greater trochanter)

Abduct and medially rotate femur (support weight when lift opposite leg)

Superior gluteal nerve

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16
Q

Gluteus minimus

A

ilium / femur (greater trochanter)

Abduct and medially rotate femur (support weight when lift opposite leg)

Superior gluteal nerve

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17
Q

Tensor fascia lata

A

ilium (anterior superior iliac spine) / IT tract

Abduct femur (also keeps leg extended via IT tract)

Superior gluteal nerve

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18
Q

Piriformis

A

sacrum / femur (greater trochanter)

laterally rotate femur

nerve to piriformis

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19
Q

Obturator internus

A

obturator membrane / femur (greater trochanter)

laterally rotate femur

nerve to obturator internus

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20
Q

Superior gemellus

A

ischial spine / femur (greater trochanter)

laterally rotate femur

nerve to obturator internus

21
Q

Inferior gemellus

A

ischial tuberosity / femur (greater trochanter)

laterally rotate femur

nerve to quadratus femoris

22
Q

Quadratus femoris

A

ischial tuberosity / femur

laterally rotate femur

nerve to quadratus femoris

23
Q

Semimembranosus

A

ischial tuberosity / tibia

flex knee, extend hip

tibial part of sciatic nerve

24
Q

Semitendinosus

A

ischial tuberosity / tibia

flex knee, extend hip

tibial part of sciatic nerve

25
Q

Biceps femoris

A

ischial tuberosity (long head), femur (short head) / fibula

flex knee, extend hip (long head only)

Long: tibial part of sciatic nerve
Short: common peroneal part of sciatic nerve

26
Q

Popliteus

A

femur / tibia

laterally rotate femur (unlock knee joint)

tibial nerve

27
Q

Gastrocnemius

A

femur / calcaneus

plantar flex foot

tibial nerve

28
Q

Soleus

A

Fibula, tibia (soleal line) / calcaneus

plantar flex foot

tibial nerve

29
Q

Plantaris

A

Femur / Calcaneus

Plantar flex foot

Tibial Nerve

30
Q

Flexor hallucis longus

A

fibula / distal phalanx of big toe

plantar flex big toe, plantar flex foot

Tibial nerve

31
Q

Flexor digitorum longus

A

tibia / distal phalanges of lateral four toes

plantar flex four toes, plantar flex foot

tibial nerve

32
Q

Tibialis posterior

A

tibia, fibula, interosseous membrane / navicular bone, cuneiform, cuboid, metatarsals 2-4

plantar flexes foot, inverts foot

tibial nerve

33
Q

Tibialis anterior

A

tibia / medial cuneiform and first metatarsal

dorsiflex, invert foot

deep peroneal nerve

34
Q

Extensor hallucis longus

A

fibula and interosseus membrane / distal phalanx of big toe

dorsiflex foot, extend big toe

deep peroneal nerve

35
Q

Extensor digitorum longus

A

tibia, fibula and interosseus membrane / extensor expansions of lateral 4 toes

dorsiflex foot, extend toes

deep peroneal nerve

36
Q

Peroneus tertius

A

fibula and interosseus membrane / fifth metatarsal

dorsiflex foot, evert foot

deep peroneal nerve

37
Q

Extensor digitorum brevis

A

calcaneus / extensor expansions of toes 2-4

extend toes

deep peroneal nerve

38
Q

Peroneus longus

A

fibula / first metatarsal, medial cuneiform

evert foot

superficial peroneal nerve

39
Q

Peroneus brevis

A

fibula / fifth metatarsal

evert foot

superficial peroneal nerve

40
Q

Abductor hallucis

A

first layer

abduct and flex big toe

medial plantar nerve

41
Q

Abductor digiti minimi

A

first layer

abduct and flex little toe

lateral plantar nerve

42
Q

Flexor digitorum brevis

A

first layer

flex lateral four toes

medial plantar nerve

43
Q

Quadratus plantae

A

second layer

assist in flexing lateral four toes

lateral plantar nerve

44
Q

Lumbricals

A

second layer

flex toes at metatarsophalangeal joint
extend toes at interphlangeal joints

lumbrical 1: medial plantar nerve
lumbrical 2-4: lateral plantar nerve

45
Q

Flexor hallicus brevis

A

third layer

flex big toe

medial plantar nerve

46
Q

Flexor digiti minimi brevis

A

third layer

flex little toe

lateral plantar nerve

47
Q

Adductor hallucis

A

third layer

adduct and flex big toe

lateral plantar nerve

48
Q

Plantar interosseus muscles

A

fourth layer

adduct toes and flex metatarsophalangeal joint

lateral plantar nerve

49
Q

Dorsal interosseus muscles

A

fourth layer

abduct toes and flex metatarsophalangeal joint

lateral plantar nerve

S&F1 (7 decks)

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