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Musculoskeletal Anatomy > LE Muscles > Flashcards

LE Muscles Flashcards

(53 cards)

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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)

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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)

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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

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A

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

25
Semitendinosus
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
Popliteus
Origin: Lateral femoral condyle Insertion: Posterior tibial surface Action: Flex knee, IR tibia, ER Femur Innervation: Tibial nerve
27
Tibialis Anterior
Origin: Upper lateral tibia interosseous membrane Insertion: Medical cuneiform Action: Dorsiflex ankle, invert intertarsal (IT) (subtalar joint(STJ)) Innervation: Deep fibular nerve
28
Extensor Digitorum Longus
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
Extensor Hallucis Longus
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
Fibularis (Peroneus) Longus
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
Fibularis (Peroneus) Brevis
Origin: Distal lateral fibula, IO membrane Insertion: Base of 5th MT Action: PF ankle, evert IT (STJ) Innervation: Superficial tibial nerve
32
Fibularis (Peroneus) Tertius
Origin: Distal anterior fibula w/ EDL Insertion: Base of 5th MT Action: DF ankle, evert IT (STJ) Innervation: Deep fibular nerve
33
Soleus
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
Gastrocnemius
Origin: Medial & lateral epicondyle femur Insertion: Calcaneal tuberosity via achilles tendon Action: PF ankle, invert IT (STJ), flex knee Innervation: Tibial nerve
35
Plantaris
Origin: Lateral epicondyle femur Insertion: Calcaneal tuberosity via achilles tendon Action: small contributer PF ankle, invert IT (STJ), flex knee Innervation: Tibial nerve
36
Tibialis Posterior
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
Flexor Digitorum Longus
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
Flexor Hallucis Longus
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
Extensor Digitorum Brevis
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
Extensor Hallucis Brevis
Origin: Dorsal surface calcaneus Insertion: Base of 1st proximal phalanx Action: Ext MTP 1 Innervation: Deep fibular nerve
41
Abductor Hallucis
Origin: Medial calcaneus Insertion: base of 1st proximal phalanx Action: Abd MTP 1, Flex MTP 1 Innervation: Medial plantar nerve
42
Flexor Hallucis Brevis (med head)
Origin: Medial cuneiform Insertion: Base of 1st proximal phalanx Action: Flex MTP 1 Innervation: Medial plantar nerve
43
Flexor Hallucis Brevis (lat head)
Origin: Intermediate cuneiform Insertion:Base of 1st proximal phalanx Action: Flex MTP 1 Innervation: Lateral plantar nerve
44
Adductor Hallucis (oblique head)
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
Adductor Hallucis (transverse head)
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
Abductor Digiti Minimi
Origin: Lateral calcaneal tuberosity Insertion: Base of 5th proximal phalanx Action: Abd MTP 5, flex MTP 5 Innervation: Lateral plantar nerve
47
Flexor Digitorum Minimi
Origin: Base of 5th MT Insertion: Base of 5th proximal phalanx Action: Flex MTP 5 Innervation: Lateral plantar nerve
48
Flexor Digitorum Brevis
Origin: Calcaneal tuberosity Insertion: Middle phalanges 2-5 Action:Flex MTP 2-5, Flex PIP 2-5 Innervation: Medial plantar nerve
49
Quadratus plantae
Origin: Calcaneal tuberosity Insertion: Lateral border of FDL tendon Action: Redirects and augments pull of FDL Innervation: Lateral plantar nerve
50
Lumbricals (1-4)
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
Plantar Interossei (1-3)
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
Dorsal Interossei (1-4)
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
Psoas Major
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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