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Musculoskeletal Anatomy > LE Muscles > Flashcards

LE Muscles Flashcards

1
Q

Iliacus

A

Origin: Iliac fossa
Insertion: Lesser trochanter
Action: Flex hip, ER hip
Innervation: Femoral nerve

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2
Q

Sartorius

A

Origin: Anterior superior iliac spine
Insertion: medical to the tibial tuberosity vis Pes Anserinus
Action: Flex hip, Abd hip, ER hip, flex knee, IR tibia
Innervation: Femoral nerve

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3
Q

Gluteus Maximus (upper)

A

Origin: Sacrum, posterior iliac crest, thoracolumbar fascia
Insertion: Iliotibial tract
Action: Extend hip, ER hip, Adb hip
Innervation: Inferior gluteal nerve

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4
Q

Gluteus Maximus (lower)

A

Origin: Sacrum, thoracolumbar fascia, sacrotuberous ligament
Insertion: Gluteal tuberosity of femur
Action: Extend hip, ER hip, Add hip
Innervation: Inferior gluteal nerve

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5
Q

Gluteus Medius

A

Origin: Superior gluteal surface of Ilium
Insertion: Greater trochanter
Action: Abd hip, flex & IR hip (ANT), ext and ER hip (POST)
Innervation: Superior gluteal nerve

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6
Q

Gluteus Minimus

A

Origin: Inferior gluteal surface of Ilium
Insertion: Greater trochanter
Action: Abd hip, flex (ANT); IR hip (ANT), ext and ER hip (POST)
Innervation: Superior gluteal nerve

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7
Q

Tensor Fascia Latae

A

Origin: Anterior superior iliac spine
Insertion: Iliotibial tract
Action: Abd hip, flex hip, IR hip
Innervation: Superior gluteal nerve

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8
Q

Piriformis

A

Origin: Anterior surface of sacrum
Insertion: Greater trochanter
Action: ER hip, abd hip, extend hip
Innervation: L5-S2 direct branches from sacral plexus

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9
Q

Gemellus Superior

A

Origin: Ischial spine
Insertion: Medial greater trochanter
Action: ER hip, add hip (30 abd), extend hip
Innervation: L5, S1 direct branches from sacral plexus

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10
Q

Obturator Externis

A

Origin: outer surface of obturator membrane
Insertion: Trochanteric fossa
Action: ER hip, add hip
Innervation: Obturator nerve

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11
Q

Quadratus Femoris

A

Origin: Ischial tuberosity
Insertion: Intertrochanteric crest
Action: ER hip, add hip
Innervation: L5, S1 direct branches of sacral plexus

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12
Q

Pectineus

A

Origin: Pubic body
Insertion: Proximal linea aspera
Action: Add hip, IR hip, flex hip
Innervation: Femoral nerve, obturator nerve

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13
Q

Adductor Longus

A

Origin: Superior pubic ramus
Insertion: medial lip of linea aspera
Action: Add hip, flex hip (to 70 degrees), IR hip
Innervation: Obturator nerve

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14
Q

Adductor Brevis

A

Origin: Inferior pubic ramus
Insertion: medial lip of linea aspera
Action: Add hip, flex hip (to 70 degrees), IR hip
Innervation: Obturator nerve

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15
Q

Adductor Magnus (anterior)

A

Origin: Inferior pubic ramus, ischial ramus
Insertion: Adductor tubercle of femur
Action: Add hip, IR hip, flex hip
Innervation: Obturator nerve

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16
Q

Adductor Magnus (posterior)

A

Origin: Ischial ramus, ischial tuberosity
Insertion: medial lip of linea aspera
Action: Add hip, ER, ext hip
Innervation: Tibial nerve

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17
Q

Gracilis

A

Origin: Inferior pubic ramus
Insertion: Medial to tibial tuberosity via Pes Anserinus
Action: Add hip, flex hip, flex knee, IR tibia
Innervation: Obturator nerve

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18
Q

Rectus Femoris

A

Origin: AIIS, acetabular roof
Insertion: Tibial tuberosity via Patellar ligament
Action: Flex hip, ext knee
Innervation: Femoral nerve

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19
Q

Vastus Medialis

A

Origin: medial lip of linea aspera
Insertion: Tibial tuberosity via Patellar ligament
Action: Ext knee
Innervation: Femoral nerve

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20
Q

Vastus Lateralis

A

Origin: Lateral lip of linea aspera
Insertion: Tibial tuberosity via Patellar ligament
Action: Ext knee
Innervation: Femoral nerve

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21
Q

Vastus Intermedius

A

Origin: Anterior femur
Insertion: Tibial tuberosity via Patellar ligament
Action: Ext knee
Innervation: Femoral nerve

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22
Q

Bicep Femoris (long head)

A

Origin: Ischial tuberosity, sacrotuberous ligament
Insertion: Head of fibula
Action: Extend hip, flex knee, ER tibia
Innervation: Tibial nerve

23
Q

Biceps Femoris (short head)

A

Origin: Lateral lip of linea aspera
Insertion: Head of fibula
Action: Extend hip, flex knee, ER tibia
Innervation: Common fibular nerve

24
Q

Semimembranosus

A

Origin: Ischial tuberosity, sacrotuberous ligament
Insertion: Medial tibial condyle
Action: Extend hip, flex knee, IR tibia
Innervation: Tibial nerve

25
Q

Semitendinosus

A

Origin: Ischial tuberosity, sacrotuberous ligament
Insertion: Medial to the tibial tuberosity via Pes Anserinus
Action: Extend hip, flex knee, IR tibia
Innervation: Tibial nerve

26
Q

Popliteus

A

Origin: Lateral femoral condyle
Insertion: Posterior tibial surface
Action: Flex knee, IR tibia, ER Femur
Innervation: Tibial nerve

27
Q

Tibialis Anterior

A

Origin: Upper lateral tibia interosseous membrane
Insertion: Medical cuneiform
Action: Dorsiflex ankle, invert intertarsal (IT) (subtalar joint(STJ))
Innervation: Deep fibular nerve

28
Q

Extensor Digitorum Longus

A

Origin: Anterior fibula, lateral tibial condyle, IO membrane
Insertion: Base of middle & distal phalanges 2-5
Action: DF ankle, evert IT (STJ), ext metatarsal-phalangeal (MTP)/interphalangeal (IP) 2-5
Innervation: Deep fibular nerve

29
Q

Extensor Hallucis Longus

A

Origin: Medial fibula IO membrane
Insertion: Base of 1st distal phalanx
Action: DF ankle, invert/evert IT (STJ), ext MTP/IP 1
Innervation: Deep fibular nerve

30
Q

Fibularis (Peroneus) Longus

A

Origin: Proximal lateral fibula, head of fibula
Insertion: Medial cuneiform, base of 1st metatarsal (MT)
Action: Plantar flex (PF) ankle, evert IT (STJ)
Innervation: Superficial fibular nerve

31
Q

Fibularis (Peroneus) Brevis

A

Origin: Distal lateral fibula, IO membrane
Insertion: Base of 5th MT
Action: PF ankle, evert IT (STJ)
Innervation: Superficial tibial nerve

32
Q

Fibularis (Peroneus) Tertius

A

Origin: Distal anterior fibula w/ EDL
Insertion: Base of 5th MT
Action: DF ankle, evert IT (STJ)
Innervation: Deep fibular nerve

33
Q

Soleus

A

Origin: Soleal line of tibia, head/neck of fibula
Insertion: Calcaneal tuberosity via Achilles tendon
Action: PF ankle, invert IT (STJ)
Innervation: Tibial nerve

34
Q

Gastrocnemius

A

Origin: Medial & lateral epicondyle femur
Insertion: Calcaneal tuberosity via achilles tendon
Action: PF ankle, invert IT (STJ), flex knee
Innervation: Tibial nerve

35
Q

Plantaris

A

Origin: Lateral epicondyle femur
Insertion: Calcaneal tuberosity via achilles tendon
Action: small contributer PF ankle, invert IT (STJ), flex knee
Innervation: Tibial nerve

36
Q

Tibialis Posterior

A

Origin: Posterior tibia, IO membrane, posterior fibula
Insertion: Navicular, medial lateral & intermediate cuneiforms, base of MT 2-4
Action: PF ankle, invert IT (STJ)
Innervation: Tibial nerve

37
Q

Flexor Digitorum Longus

A

Origin: Middle posterior tibia
Insertion: Base of distal phalanges 2-5
Action: PF ankle, invert IT (STJ), flex MTP, flex IP 2-5
Innervation: Tibial nerve

38
Q

Flexor Hallucis Longus

A

Origin: Distal posterior fibula
Insertion: Base of 1st distal phalanx
Action: PF ankle, invert IT (STJ), flex MTP 1, flex IP 1
Innervation: Tibial nerve

39
Q

Extensor Digitorum Brevis

A

Origin: Dorsal surface calcaneus
Insertion: Base of middle phalanges 2-4
Action: Ext MTP 2-4, ext proximal interphalangeal (PIP) 2-4
Innervation: Deep fibular nerve

40
Q

Extensor Hallucis Brevis

A

Origin: Dorsal surface calcaneus
Insertion: Base of 1st proximal phalanx
Action: Ext MTP 1
Innervation: Deep fibular nerve

41
Q

Abductor Hallucis

A

Origin: Medial calcaneus
Insertion: base of 1st proximal phalanx
Action: Abd MTP 1, Flex MTP 1
Innervation: Medial plantar nerve

42
Q

Flexor Hallucis Brevis (med head)

A

Origin: Medial cuneiform
Insertion: Base of 1st proximal phalanx
Action: Flex MTP 1
Innervation: Medial plantar nerve

43
Q

Flexor Hallucis Brevis (lat head)

A

Origin: Intermediate cuneiform
Insertion:Base of 1st proximal phalanx
Action: Flex MTP 1
Innervation: Lateral plantar nerve

44
Q

Adductor Hallucis (oblique head)

A

Origin: Base MTs 2-4, Cuboid, lateral cuneiform
Insertion: Base of 1st proximal phalanx
Action: Add MTP 1, Flex MTP 1
Innervation: Lateral plantar nerve

45
Q

Adductor Hallucis (transverse head)

A

Origin: Deep transverse MT ligament, MTP 3-5
Insertion: Base of 1st proximal phalanx
Action: Add MTP 1, support transverse arch
Innervation: Lateral plantar nerve

46
Q

Abductor Digiti Minimi

A

Origin: Lateral calcaneal tuberosity
Insertion: Base of 5th proximal phalanx
Action: Abd MTP 5, flex MTP 5
Innervation: Lateral plantar nerve

47
Q

Flexor Digitorum Minimi

A

Origin: Base of 5th MT
Insertion: Base of 5th proximal phalanx
Action: Flex MTP 5
Innervation: Lateral plantar nerve

48
Q

Flexor Digitorum Brevis

A

Origin: Calcaneal tuberosity
Insertion: Middle phalanges 2-5
Action:Flex MTP 2-5, Flex PIP 2-5
Innervation: Medial plantar nerve

49
Q

Quadratus plantae

A

Origin: Calcaneal tuberosity
Insertion: Lateral border of FDL tendon
Action: Redirects and augments pull of FDL
Innervation: Lateral plantar nerve

50
Q

Lumbricals (1-4)

A

Origin: Medial border of FDL tendons
Insertion: Dorsal aponeuroses 2-5
Action: Flex MTP 2-5, Ext IP 2-5, Add MTP 3-5, Abd MTP 2
Innervation: Medial plantar nerve (1st lumbrical), lateral plantar nerve (lumbricals 2-5)

51
Q

Plantar Interossei (1-3)

A

Origin: Medial border of MT 3-5
Insertion: Medial base of proximal phalanges 3-5
Action: Add MTP 3-5
Innervation: Lateral plantar nerve

52
Q

Dorsal Interossei (1-4)

A

Origin: Two heads from opposing sides of MT 1-5
Insertion: Medial base of 2nd proximal phalanx (1st interosseous), lateral base of proximal phalanges (interossei 2-4)
Action: Abd MTP 3-5
Innervation: Lateral plantar nerve

53
Q

Psoas Major

A

Origin: Lateral surface of T12-L4 vertebral bodies
Insertion: Lesser trochanter
Action: Flex hip, ER hip, flex lumbar spine, ipsilateral flex spine
Innervation: L1-L3 direct branches from lumbar plexus

Musculoskeletal Anatomy (1 decks)

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