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Kinesiology > Lower Extremity Muscles > Flashcards

Lower Extremity Muscles Flashcards

1
Q

Sartorius Origin/Insertion

A

O: ASIS
I: Superior part of medial surface of tibia

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2
Q

Sartorius Action

A

Hip joint: Flexes, abducts, externally rotates thigh
Knee: Flexor

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3
Q

Tensor Fasciae Latae Origin/Insertion

A

O: ASIS
I: IT Band to lateral condyle of the tibia

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4
Q

Tensor Fasciae Latae Action

A

Hip: Abducts and internally rotates thigh, pelvic stability

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5
Q

Gluteus Medius Origin/Insertion

A

O: External surface of ilium between the anterior and posterior gluteal lines
I: Lateral surface of greater trochanter of the femur

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6
Q

Gluteus Medius Action

A

Hip: Abducts and internally rotates thigh, pelvic stability

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7
Q

Adductor Longus Origin/Insertion

A

O: Body of pubis inferior to pubic crest
I: Middle third linea aspera of femur

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8
Q

Adductor Longus Action

A

Adducts thighs

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9
Q

Adductor Brevis Origin/Insertion

A

O: Body and inferior ramus of pubis
I: Pectineal line and proximal line of linea aspera

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10
Q

Adductor Brevis Action

A

Adducts thigh and slightly flexes it

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11
Q

Adductor Magnus Origin/Insertion

A

Adductor Part
O: Inferior ramus of pubis, ramus of ischium
I: Gluteal tuberosity, linea aspera, medial supracondylar line
Hamstring Part:
O: Ischial Tuberosity
I: Adductor tubercle of femur

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12
Q

Adductor Magnus Action

A

Adducts thigh
Adductor Part: Flexes thigh
Hamstring Part: Extends thigh

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13
Q

Rectus Femoris Origin/Insertion

A

O: AIIS and Ilium superior to acetabulum
I: Via quadriceps tendon independent attachments to base of patella

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14
Q

Rectus Femoris Action

A

steadies hip joint and helps iliopsoas flex thigh; extend leg at knee joint

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15
Q

Semitendinosus Origin/Insertion

A

O: Ischial tuberosity
I: Media surface of superior part of tibia

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16
Q

Semimembranosus Origin/Insertion

A

O: Ischial tuberosity
I: Posterior part of medial condyle of tibia

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17
Q

Semimembranosus and Semitendinosus Action

A

Extend thigh; Flex knee and medially rotate it when knee is flexed

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18
Q

Biceps Femoris Origin/Insertion

A

Long head origin: Ischial tuberosity
Short head origin: Linea aspera and lateral supracondylar line
Insertion: Lateral side of fibula

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19
Q

Biceps Femoris Action

A

Flexes leg and rotates laterally when knee is flexed; extends thigh

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20
Q

Gluteus Maximus Origin/Insertion

A

O: Ilium posterior to gluteal line; dorsal surface of sacrum and coccyx
I: IT tract which inserts into lateral condyle of tibia; gluteal tuberosity

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21
Q

Gluteus Maximus Action

A

Extends thigh and assists in lateral rotation; Steadies thigh and assist in rising from a sitting position

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23
Q

Vastus Lateralis Origin/Insertion

A

O: Greater trochanter and lateral lip of linea aspera of femur
I: Quadriceps tendon to base of the patella

24
Q

Vastus Lateralis Action

A

Extends knee

25
Vastus Intermedius Origin/Insertion
O: Anterior and lateral surfaces of shaft of femur I: Quadriceps tendon to base of the patella
26
Vastus Intermedius Action
Extends knee
27
Vastus Medialis Origin/Insertion
O: Anterior and lateral surfaces of shaft of femur I: Quadriceps tendon to base of the patella
28
Vastus Medialis Action
Extends knee
29
Gracilis Origin/Insertion
O: Body and inferior ramus of pubis I: Superior part of medial surface of tibia
30
Gracilis Action
Adducts thigh; flexes knee; helps rotate leg medially
31
Popliteus Origin/Insertion
O: Lateral surface of lateral condyle of femur and lateral meniscus I: Posterior surface of tibia, superior to soleal line
32
Popliteus Action
Medially rotates tibia on the femur if the femur is fixed (sitting down) or laterally rotates femur on the tibia if tibia is fixed (standing up), unlocks the knee to allow flexion
33
Gastrocnemius Origin/Insertion
O: Lateral head: lateral aspect of lateral condyle of femur Medial head: popliteal surface of femur; superior to medial condyle I: Posterior surface of calcaneus via calcaneal tendon
34
Gastrocnemius Action
Plantarflexes ankle when knee is extended, raises heel during walking; flexes leg at knee joint
35
Soleus Origin/Insertion
O: Posterior aspect of head and superior quarter of posterior fibula; soleal line and middle third of medial border of tibia; and tendinous arch extending between bony attachments I: Posterior surface of calcaneus via calcaneal tendon
36
Soleus Action
Plantarflexes ankle independent of position of knee; steadies leg on foot
37
Tibialis Anterior Origin/Insertion
O: Lateral condyle and superior half of lateral surface of tibia and interosseous membrane I: Medial and inferior surfaces of medial cuneiform and base of 1st metatarsal
38
Tibialis Anterior Action
Dorsiflexes ankle and inverts foot
39
Peroneus Longus Origin/Insertion
O: Head and superior two thirds of lateral surface of fibula I: Base of 1st metatarsal and medial cuneiform
40
Peroneus Longus Action
Everts foot and weakly plantarflexes ankle
41
Peroneus Brevis Origin/Insertion
O: Inferior two thirds of lateral surface of fibula I: Dorsal surface of tuberosity on lateral side of base on 5th metatarsal
42
Peroneus Brevis Action
Everts foot and weakly plantarflexes ankle
43
Peroneus Tertius Origin/Insertion
O: Inferior third of anterior surface of fibula and interosseous membrane I: Dorsum of base of 5th metatarsal
44
Peroneus Tertius Action
Dorsiflexes ankle and aids in eversion of foot
45
Extensor Digitorum Longus Origin/Insertion
O: Lateral condyle of tibia and superior three quarters of medial surface of fibula and interosseous membrane I: Middle and distal phalanges of lateral four digits
46
Extensor Digitorum Longus Action
Extends lateral four digits and dorsiflexes ankle
47
Extensor Hallucis Longus Origin/Insertion
O: Middle part of anterior surface of fibula and interosseous membrane I: Dorsal aspect of base of distal phalanx of great toe
48
Extensor Hallucis Longus Action
Extends great toe and dorsiflexes ankle
49
Tibialis Posterior Origin/Insertion
O: Interosseous membrane; posterior surface of tibia inferior to soleal line; posterior surface of fibula I: Tuberosity of navicular, cuneiform, cubiod and sustentaculum tali of calcaneus; bases of 2, 3, and 4th metatarsal
50
Tibialis Posterior Action
Plantarflexes ankle and inverts foot
51
Flexor Digitorum Longus Origin/Insertion
O: Medial part of posterior surface of tibia inferior to soleal line; by a broad tendon to fibular I: Bases of distal phalanges of lateral four digits
52
Flexor Digitorum Longus Action
Flexes lateral four digits; plantarflexes ankle; supports longitudinal arches of foot
53
Flexor Hallucis Longus Origin/Insertion
O: Inferior two thirds of posterior surface of fibula; interior part of interosseus membrane I: Base of distal phalanx of great toe
54
Flexor Hallucis Longus Action
Flexes great toe at all joints; weakly plantarflexes ankle; supports medial longitudinal arch of foot

Kinesiology (5 decks)

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