Anatomy Lower Extremity Flashcards

1
Q

Rectus Femoris

A

O: Anterior inferior iliac spine and upper acetabulum
I: Patella and tibial tuberosity
A: Extends knee; Flexes thigh
N: Femoral Nerve

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2
Q

Vastus Lateralis

A

O: Greater tubercle and tibial tuberosity
I: Patella and tibial tuberosity
A: Extends leg at knee
N: Femoral Nerve

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3
Q

Vastus Medialis

A

O: Intertrochanteric line and medial linea aspera
I: Patella and tibial tuberosity
A: Extends leg at knee
N: Femoral Nerve

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4
Q

Vastus Intermedius

A

O: Anterior and lateral femur
I: Patella and tibial tuberosity
A: Extends leg at knee
N: Femoral Nerve

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5
Q

Tensor Fasciae Latae

A

O: Iliac crest and superior iliac spine
I: Iliotibial tract
A: Abducts, flexes, and medially rotates thigh
N: Superior Gluteal Nerve

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6
Q

Gluteus Maximus

A

O: Dorsal ilium, sacrum, and coccyx
I: Gluteal tiberosity of femur, iliotibial tract
A: Abducts, extends, and laterally rotates thigh
N: Inferior Gluteal Nerve

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7
Q

Gluteus Medius

A

O: Between anterior and posterior gluteal lines on ilium
I: Lateral surface of greater trochanter
A: Abducts and medially rotates thigh
N: Superior Gluteal Nerve

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8
Q

Gluteus Minimus

A

O: Between anterior and inferior gluteal lines on ilium
I: Greater trochanter
A: Abducts and medially rotates thigh
N: Superior Gluteal Nerve

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9
Q

Piriformis

A

O: Anterolateral surface of sacrum
I: Greater trochanter
A: Laterally rotates extended thigh
N: S1 and S2 Nerves

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10
Q

Obturator Internus

A

O: Obturator membrane, greater sciatic notch
I: Greater trochanter (above piriformis)
A: Rotates extended thigh laterally
N: L5 and S1 Nerves

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11
Q

Obturator Externus

A

O: Obturator membrane, pubis, and ischium
I: Trochanteric fossa of femur
A: Rotates extended thigh laterally
N: Obturator Nerve

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12
Q

Quadratus Femoris

A

O: Ischial Tuberosity
I: Intertrochanteric crest of femur
A: Rotates thigh laterally
N: L5 and S1

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13
Q

Biceps Femoris

A

O: long head - Ischial tuberosity
short head - lateral linea aspera
I: Lateral head of fibula and lateral condyle of tibia
A: Flexes leg and rotates tibia laterally
N: Sciatic Nerve

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14
Q

Semitendinosus

A

O: Ischial tuberosity
I: Medial tibial shaft
A: Extends thigh and flexes knee
N: Sciatic Nerve

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15
Q

Semimembranosus

A

O: Ischial tuberosity
I: Medial condyle of tibia
A: Extends thigh and flexes knee
N: Sciatic Nerve

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16
Q

Superior Gemellus

A

O: Ischial Spine
I: Greater trochanter
A: Rotates extended thigh laterally
N: L5 and S1

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17
Q

Inferior Gemellus

A

O: Ischial tuberosity
I: Greater trochanter
A: Rotates extended thigh laterally
N: L5 and S1

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18
Q

Popliteus

A

O: Lateral condyle of femur
I: Proximal tibia
A: Flexes and rotates leg medially
N: Tibial Nerve

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19
Q

Plantaris

A

O: Posterior femur above lateral condyle
I: Calcaneus
A: Flexes knee and plantar flexes foot
N: Tibial Nerve

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20
Q

Gastrocnemius

A
O: Medial Head - Medial condyle of femur
     Lateral Head - Lateral condyle of femur 
I: Posterior Calcaneus 
A: Plantar flexes foot 
N: Tibial Nerve
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21
Q

Soleus

A

O: Superior tibia, fibula, and interosseus membrane (posterior)
I: Posterior Calcaneus
A: Plantar flexes foot
N: Tibial Nerve

22
Q

Plantar Interossei

A

O: Medial side of metatarsals 3-5
I: Medial side of phalanges 3-5
A: Adduct toes 3-5
N: Lateral Plantar Nerve

23
Q

Dorsal Interossei

A

O: Inner aspects of all metatarsals
I: Base of proximal phalanges 2-4
A: Abduct toes 2-4
N: Lateral Plantar Nerve

24
Q

Extensor Hallucis Brevis

A

O: Superior anterior calcaneus
I: Proximal phalanx of big toe
A: Extends big toe
N: Deep Peroneal Nerve

25
Extensor Digitorum Brevis
O: Anterior calcaneus and extensor retinaculum I: Proximal phalanx of big toe A: Extends toes at metatarsophalangeal joints N: Deep Fibular Nerve
26
Flexor Digiti Minimi Brevis
O: Base of metatarsal 5 I: Base of proximal phalanx of little toe A: Flexes little toe at metatarsophalangeal joint N: Lateral Plantar Nerve
27
Flexor Hallucis Brevis
O: Lateral cuneiform and cuboid bones I: Base of proximal phalanx of big toe A: Flexes big toe at metatarsophalangeal joint N: Medial Plantar Nerve
28
Lumbricals
O: Flexor digitorum longus tendons I: Extensor expansion on proximal phalanx of toes 2-5 A: Flex toes at metatarsophalangeal joints and extend toes at interphalangeal joints N: Medial and Lateral Plantar Nerves
29
Adductor Hallucis
O: Oblique Head - Bases of metatarsals 2-4 Transverse Head - metatarsophalangeal ligament I: Base of proximal phalanx of big toe A: Maintains transverse arch of foot, weakly adducts N: Lateral Plantar Nerve
30
Adductor Magnus
O: Ischial and pubic rami and ischial tuberosity I: Linea aspera and adductor tubercle A: Anterior - Adducts, medially rotates and flexes thigh Posterior - Extends thigh N: Obturator and Sciatic Nerves
31
Adductor Longus
O: Pubis near pubic symphysis I: Linea aspera and adductor tubercle A: Adducts, flexes, and medially rotates thigh N: Obturator Nerve
32
Adductor Brevis
O: Inferior pubic ramus I: Linea aspera above adductor longus A: Adducts, flexes, and medially rotates thigh N: Obturator Nerve
33
Pectineus
O: Pectineal line of pubis I: Pectineal line of femur between linea aspera and lesser trochanter A: Adducts, flexes, and medially rotates thigh N: Femoral Nerve
34
Gracilis
O: Inferior ramus of pubis and body of pubis I: Medial surface of tibia A: Adducts thigh, flexes knee, and medially rotates thigh N: Obturator Nerve
35
Iliacus (Iliopsoas)
O: Iliac fossa and crest I: Lesser trochanter of femur A: Flexes thigh at hip N: Femoral Nerve
36
Psoas Major (Iliopsoas)
O: Lumbar and T12 vertebrae I: Lesser trochanter of femur A: Flexes thigh and trunk N: L1 Nerve, Ventral Rami
37
Sartorius
O: Anterosuperior iliac spine I: Superior medial tibia A: Flexes, abducts, and laterally rotates thigh N: Femoral Nerve
38
Quadratus Plantae
O: Medial and lateral calcaneus I: Tendon of flexor digitorum longus A: Straightens out the oblique pull of flexor digitorum longus N: Lateral Plantar Nerve
39
Extensor Hallucis Longus
O: Anteromedial fibula shaft I: Distal phalanx of big toe A: Extends big toe N: Deep Fibular Nerve
40
Flexor Digitorum Brevis
O: Calcaneal tuberosity I: Middle phalanx of toes 2-4 A: Flexes toes N: Medial Plantar Nerve
41
Abductor Digiti Minimi
O: Calcaneal tuberosity I: Lateral side of proximal phalanx of little toe A: Abducts and flexes little toe N: Lateral Plantar Nerve
42
Abductor Hallucis
O: Calcaneal tuberosity and flexor retinaculum I: Proximal phalanx of big toe, medial side A: Abducts big toe N: Medial Plantar Nerve
43
Flexor Hallucis Longus
O: Midshaft of fibula I: Distal phalanx of big toe A: Plantar flexes and inverts foot, flexes big toe N: Tibial Nerve
44
Flexor Digitorum Longus
O: Posterior tibia I: Distal phalanges of toes 2-5 A: Plantar flexes and inverts foot, flexes toes N: Tibial Nerve
45
Tibialis Posterior
O: Superior tibia and fibula I: Metatarsals 2-4 A: Prime mover of foot inversion N: Tibial Nerve
46
Extensor Digitorum Longus
O: Lateral condyle of tibia, upper fibula I: Middle and distal phalanges of toes 2-5 A: Prime mover of toe extension N: Deep Fibular Nerve
47
Peroneus Longus
O: Head and upper lateral fibula I: First metatarsal and medial cuneiform A: Plantar flexes and everts foot N: Superficial Fibular Nerve
48
Peroneus Brevis
O: Distal fibula shaft I: Proximal 5th metatarsal A: Plantar flexes and everts foot N: Superficial Fibular Nerve
49
Peroneus Tertius
O: Distal anterior fibula I: Dorsum of 5th metatarsal A: Dorsiflexes and everts foot N: Deep Fibular Nerve
50
Tibialis Anterior
O: Lateral condyle and upper tibial shaft I: Inferior surface of medial cuneiform and 1st metatarsal A: Prime mover of dorsiflexion N: Deep Fibular Nerve