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MSK Exam 2 > LE Myology Part 2 > Flashcards

LE Myology Part 2 Flashcards

1
Q

Gluteus Maximus
O:
I:
A:

A

O: Ilium, Dorsal sacrum and coccyx, Sacrotuberous L
I: Gluteal tuberosity and lateral tibial condyle via the IT
A: Extend Thigh, ASSIST lateral rotation

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2
Q

Gluteus Medius & Minimus
O:
I:
A:

A

O: Ilium
I: Greater trochanter
A: Abduct thigh, medially rotate thigh

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3
Q

Tensor Fascia Lata
O:
I:
A:

A

O: Anterior Superior Iliac Spine (ASIS), anterior aspect iliac crest
I: IT and Tibial Condyle via the IT
A: Abduct thigh, medially rotate thigh, flex thigh, maintain extended leg

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4
Q

Piriformis
O:
I:
A:

A

O: Anterior sacrum, Sacrotuberous L
I: Greater trochanter
A: Laterally rotate thigh when extended, abduct thigh when flexed, stabilize femoral head in acetabulum

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5
Q

Superior Gemellus
O:
I:
A:

A

O: Ischial Spine
I: Greater trochanter
A: Laterally rotate thigh when extended, medially rotate thigh when flexed, stabilize femoral head in acetabulum

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6
Q

Inferior Gemellus
O:
I:
A:

A

O: Ischial tuberosity
I: Greater trochanter
A: Laterally rotate thigh when extended, medially rotate thigh when flexed, stabilize femoral head in acetabulum

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7
Q

Quadratus Femoris
O:
I:
A:

A

O: Ischial tuberosity
I: Quadrate tubercle on intertrochanteric crest
A: Laterally rotate thigh, stabilize femoral head in acetabulum

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8
Q

Obturator Externus
O:
I:
A:

A

O: Obturator membrane, margin of obturator foramen (both on anterior side)
I: Trochanteric fossa (anterior side, near greater troch)
A: Laterally rotate thigh, stabilize femoral head in acetabulum

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9
Q

Obturator Internus
O:
I:
A:

A

O: Pelvic surfaces of Ilium and Ischium, Obturator membrane
I: Greater trochanter
A: Laterally rotate thigh when extended, abduct thigh when flexed, stabilize femoral head in acetabulum

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10
Q

Psoas Major
O:
I:
A:

A

O: Transverse processes of L1-5, vertebral bodies of T12-L5
I: Lesser trochhanter
A: Laterally flex vertebral columnm, balance trunk, flex the trunk, flex the thigh when acting with Iliacus

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11
Q

Iliacus
O:
I:
A:

A

O: Superior Iliac Fossa, ala of sarcrum, anterior sacroiliac ligament
I: Lesser trochanter, femoral shaft, psoas major tendon
A: Flex the thigh, stabilize hip joint

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12
Q

Sartorius
O:
I:
A:

A

O: Anterior superior iliac spine (ASIS)
I: Pes anserine (medial proximal tibia)
A: Flex thigh, abduct thigh, laterally rotate thigh, flex leg at the knee

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13
Q

Rectus Femoris
O:
I:
A:

A

O: Anterior inferior iliac spine (AIIS)
I: Base of patella, tibial tuberosity via patellar ligament
A: Extend leg at knee, assists Iliopsoas in thigh flexion

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14
Q

Vastus Lateralis
O:
I:
A:

A

O: Greater trochanter, lateral lip of linea aspera
I: Base of patella, tibial tuberosity via patellar ligament
A: Extend leg at the knee

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15
Q

Vastus Intermedius
O:
I:
A:

A

O: Anterior and lateral surface of femoral body
I: Base of patella, tibial tuberosity via patellar ligament
A: Extend leg at the knee

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16
Q

Vastus Medialis
O:
I:
A:

A

O: Intertrochanteric line, medial lip of linea aspera
I: Base of patella, tibial tuberosity via patellar ligament
A: Extend leg at knee

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17
Q

Articularis Genu
O:
I:
A:

A

O: Anterior distal femur
I: Articular capsule of knee
A: Tightens capsule of knee during leg extension

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18
Q

Pectineus
O:
I:
A:

A

O: Superior pubic ramus
I: Pectineal line of femur
A: Adduct thigh, flex thigh

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19
Q

Adductor Longus
O:
I:
A:

A

O: Body of pubis
I: Middle linea aspera
A: Adduct thigh

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20
Q

Adductor Brevis
O:
I:
A:

A

O: Inferior pubic ramus
I: Pectineal line, proximal linea aspera
A: Adduct thigh, assist in thigh flexion

21
Q

Adductor Magnus
O:
I:
A:

A

O: Ischiopubic ramus, ischial tuberosity
I: Gluteal tuberosity, linea aspera, medial supracondylar line, adductor tubercle
A: Adduct thigh, upper fibers flex the thigh, lower fibers extend the thigh

22
Q

Gracilis
O:
I:
A:

A

O: Inferior pubic ramus, body of pubis
I: Pes anserine (medial proximal tibia)
A: Adduct thigh, flex the leg, assist in medial thigh rotation

23
Q

Biceps Femoris
O:
I:
A:

A

O: Long head- ischial tuberosity, short head- linea aspera and lateral supracondylar line
I: Lateral aspect fibular head
A: Flex leg, laterally rotates flexed leg, long head- extends thigh

24
Q

Semitendinosus
O:
I:
A:

A

O: Ischial tuberosity
I: Pes anserine (medial proximal tibia)
A: Extend thigh, flex leg, medially rotate flexed leg

25
Q

Semimembranosus
O:
I:
A:

A

O: Ischial tuberosity
I: Posterior medial tibial condyle
A: Extend thigh, flex leg, medially rotate flexed leg

26
Q

Tibialis Anterior
O:
I:
A:

A

O: Lateral tibial condyle, lateral proximal tibia, interosseous membrane
I: Inferomedial aspect medial cuneiform, base of 1st metatarsal
A: Dorsiflex the foot at the ankle, invert foot

27
Q

Extensor Hallucis Longus
O:
I:
A:

A

O: Anterior fibula, interosseous membrane
I: Dorsum of base of 1st distal phalanx
A: Extend hallux, dorsiflex the foot at the ankle

28
Q

Extensor Digitorum Longus
O:
I:
A:

A

O: Lateral tibial condyle, medial fibula, interosseous membrane
I: 2nd-5th middle and distal phalanges
A: Extend digits 2-5, dorsiflex foot

29
Q

Fibularis Tertius
O:
I:
A:

A

O: Anteroinferior aspect of fibula, interosseous membrane
I: Dorsal aspect base of 5th metatarsal
A: Dorsiflex foot, assist in eversion of foot

30
Q

Fibularis Longus
O:
I:
A:

A

O: Head and superior fibula
I: Base of 1st metatarsal, medial cuneiform
A: Evert foot, assist in plantarflexion

31
Q

Fibularis Brevis
O:
I:
A:

A

O: Inferolateral fibula
I: Tuberosity of base of 5th metatarsal
A: Evert foot, assist in plantarflexion

32
Q

Gastrocnemius
O:
I:
A:

A

O: Lateral head- lateral femoral condyle, medial head- popliteal surface above medial femoral condyle
I: Posterior calcaneus via calcaneal tendon
A: Plantarflexion with extended knee, elevates heel, flexes leg

33
Q

Soleus
O:
I:
A:

A

O: Posterior head and body of fibula, soleal line (posterior tibia)
I: Posterior calcaneus via calcaneal tendon
A: Plantarflexion of the foot at the ankle

34
Q

Plantaris
(vestigial muscle, frequently absent, referred to as “freshman’s nerve”)
O:
I:
A:

A

O: Lateral supracondylar line, oblique popliteal ligament
I: Posterior calcaneus via calcaneal tendon
A: Weakly assists in plantarflexion and flexing the knee

35
Q

Popliteus
O:
I:
A:

A

O: Lateral femoral condyle, lateral meniscus
I: Posterior tibia via superomedial to soleal line
A: Weakly flexes the knee

36
Q

Flexor Hallucis Longus
O:
I:
A:

A

O: Posteroinferior fibula, interosseous membrane
I: Base of 1st distal phalanx
A: Flex the hallux, weakly plantarflexes the foot at the ankle

37
Q

Tibialis Posterior
O:
I:
A:

A

O: Posterior fibula, posterior tibia inferior to soleal line, interosseous membrane
I: Tuberosity of navicular, medial and intermediate cuneiform, base of 3rd-5th metatarsals
A: Plantarflexion, eversion

38
Q

Extensor Digitorum Brevis
O:
I:
A:

A

O: Superolateral aspect of calcaneus, interosseous talocalcaneal ligament
I: Extensor digitorum longus tendon
A: Extends digits 2-5

39
Q

Extensor Hallucis Brevis
O:
I:
A:

A

O: Superolateral aspect of calcaneus, interosseous talocalcaneal ligament
I: Dorsal aspect of base of 1st proximal phalanx
A: Extends hallux at the metatarsophalangeal joint

40
Q

Adductor Hallucis
O:
I:
A:

A

O: Medial tubercle calcaneal tuberosity
I: Medial aspect base of 1st proximal phalanx
A: Abduct hallux, flex the hallux

41
Q

Flexor Digitorum Brevis
O:
I:
A:

A

O: Medial tubercle calcaneal tuberosity
I: Intermediate phalanges 2nd-5th digits
A: Flex digits 2-5

42
Q

Abductor Digiti Minimi
O:
I:
A:

A

O: Calcaneal Tuberosity
I: Lateral aspect of base of 5th proximal phalanx
A: Abducts and flexes 5th digit

43
Q

Quadratus Plantae
O:
I:
A:

A

O: Plantar surface of calcaneus
I: Flexor digitorum longus tendon
A: Assist in flexing digits 2-5

44
Q

Lumbricals (4 in total)
O:
I:
A:

A

O: Flexor digitorum longus tendon
I: Medial proximal phalanx of digits 2-5, medial aspect of digital expansion on digits 2-5
A: Flex metatarsophalangeal joint, extend proximal and distal IP joints

45
Q

Flexor Hallucis Brevis
O:
I:
A:

A

O: Plantar surface cuboid bone, lateral cuneiform bone
I: Base 1st proximal phalanx
A: Flexes 1st proximal phalanx

46
Q

Flexor Digiti Minimi Brevis
O:
I:
A:

A

O: Base 5th metatarsal bone
I: Base 5th proximal phalanx
A: Flex proximal phalanx of 5th digit

47
Q

Adductor Hallucis
O:
I:
A:

A

O: Oblique head- bases of 2nd-4th metatarsals, transverse head- plantar metatarsophalangeal ligament
I: Base of 1st proximal phalanx
A: Adduct hallux

48
Q

Dorsal Interossei (DABs, 4 in total)
O:
I:
A:

A

O: Adjacent edges and bases of 1-5 metatarsal bones
I: 1st- medial aspect 2nd proximal phalanx, 2nd-4th- lateral aspect bases of 2-4th proximal phalanges
A: Abducts digits 2-4, flexes metatarsophalangeal joint

49
Q

Plantar Interossei (PADs, 3 in total)
O:
I:
A:

A

O: Medail aspects and bases of 3rd-5th metatarsal bones
I: Medial aspect bases of 3rd, 4th and 5th proximal phalanges
A: Adduct digits 3-5, flex metatarsophalangeal joint

MSK Exam 2 (14 decks)

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