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LE Muscle Chart Flashcards

(55 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: Medial to tibial tuberosity via Pes Anserinus
Action: Flex hip, Abduct (Abd) hip, ER hip, flex knee, internally rotate (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, Abduct Hip
Innervation: Inferior gluteal nerve

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4
Q

Gluteus Maximus (lower)

A

Origin: Sacrum, thoracolumbar fascia, sacrotuberous ligament
Insertion: Gluteal tuberosity
Action: Extend hip, ER hip, Adduct (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, Ant: flexion, IR hip, Post: extension, ER hip
Innervation: Superior gluteal nerve

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6
Q

Psoas Major

A

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

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7
Q

Gluteus Minimus

A

Origin: Inferior gluteal surface of ilium
Insertion: Greater trochanter
Action: Abd hip, Ant. flex and IR hip, Post. Ext and ER hip
Innervation: Superior gluteal nerve

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8
Q

Tensor Fasciae Latae

A

Origin: Anterior superior iliac spine
Insertion: Iliotibial tract
Action: Tenses fascia latae, Abd hip, Flex hip, IR hip
Innervation: Superior gluteal nerve

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9
Q

Piriformis

A

Origin: Ant. surface sacrum
Insertion: Greater trochanter
Action: ER hip, Abd hip, Ext hip
Innervation: L5-S2 direct branches from sacral plexus

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10
Q

Gemellus superior

A

Origin: Ischial spine
Insertion: Medial greater trochanter
Action: ER hip, Add hip 30 degrees Abd, Ext. hip
Innervation: L5, S1 direct branches from sacral plexus

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11
Q

Obturator Internis

A

Origin: Inner surface of obturator membrane
Insertion: Medial greater trochanter
Action: ER hip, Add hip 30 degrees Abd, Ext. hip
Innervation: L5, S1 direct branches from sacral plexus

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12
Q

Gemellus Inferior

A

Origin: Ischial tuberosity
Insertion: Medial greater trochanter
Action: ER hip, Add hip 30 degrees Abd, Ext. hip
Innervation: L5, S1 direct branches from sacral plexus

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13
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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14
Q

Quadratus femoris

A

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

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15
Q

Pectineus

A

Origin: Superior pubic ramus
Insertion: pectineal line
Action: add hip, IR hip, flex hip
Innervation: femoral nerve

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16
Q

Adductor longus

A

Origin: superior pubic ramus
Insertion: medial lip of linea aspera
Action: adduct hip, IR hip, flex hip
Innervation: obturator nerve

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17
Q

Adductor brevis

A

Origin: Inferior pubic ramus
Insertion: Medial lip of linea aspera
Action: Add hip, flex hip, IR hip
Innervation: Obturator nerve

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18
Q

Adductor magnus (anterior)

A

Origin: Inferior pubic ramus, ischial ramus
Insertion: Medial lip of linea aspera
Action: Add hip, Ant: IR hip, Ant: flex hip
Innervation: Obturator nerve

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19
Q

Adductor magnus (posterior)

A

Origin: Ischial ramus, ischial tuberosity
Insertion: Adductor tubercle of femur
Action: Add hip, Post: ER hip, Post: Ext hip
Innervation: Tibial nerve

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20
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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21
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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22
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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23
Q

Vastus lateralis

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A

Origin: lateral lip of linea aspera
Insertion: tibial tuberosity via patellar ligament
Action: Ext. knee
Innervation: Femoral nerve

24
Q

Vastus Intermedius

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A

Origin: Anterior femur
Insertion: Tibial tuberosity via patellar ligament
Action: ext. knee
Innervation: Femoral nerve

25
Biceps Femoris (long head)
Origin: Ischial tuberosity Insertion: head of fibula Action: Ext. hip, flex knee, ER tibia Innervation: Tibial nerve
26
Biceps Femoris (short head)
Origin: Lateral lip of linea aspera Insertion: head of fibula Action: Flex knee, ext. rot. tibia Innervation: common fibular nerve
27
Semi-membranosus
Origin: Ischial tuberosity Insertion: Medial tibial condyle Action: Ext. hip, flex knee, IR tibia Innervation: Tibial nerve
28
Semitendinosus
Origin: Ischial tuberosity Insertion: Medial to tibial tuberosity via Pes Anserinus Action: Ext. hip, flex knee, IR tibia Innervation: Tibial nerve
29
Popliteus
Origin: Lateral femoral condyle Insertion: Post. tibial surface Action: Flex knee, IR tibia, ER femur Innervation: Tibial nerve
30
Tibialis anterior
Origin: upper lateral tibia, interosseosus (IO) membrane Insertion: medial cuneiform Action: dorsiflex ankle, invert intertarsal (IT)(subtalar joint(STJ)) Innervation: Deep fibular nerve
31
Extensor digitorum longus
Origin: anterior fibula, lateral tibial condyle, IO membrane Insertion: base of middle and distal phalanges 2-5 Action: DF ankle, evert IT (STJ), ext metatarsal-phalangeal (MTP)/interphalangeal (IP) 2-5 Innervation: deep fibular nerve
32
Extensor hallucis longus
Origin: medial fibula, IO membrane Insertion: base of 1st distal phalanx Action: DF ankle, evert/invert IT (STJ), ext MTP/IP 1 Innervation: deep fibular nerve
33
Fibularis (peroneus) longus
Origin: proximal lateral fibula, head of fibula Insertion: medial cuneiform, base of 1st metatarsal (MT) Action: plantar flex (PT) ankle, evert IT (STJ) Innervation: superficial fibular nerve
34
Fibularis (peroneus) brevis
Origin: Distal lateral fibula, IO membrane Insertion: Base of 5th MT Action: PF ankle, evert IT (STJ) Innervation: Superficial fibular nerve
35
Fibularis (peroneus) tertius
Origin: Distal anterior fibula w/ EDL Insertion: Base of 5th MT Action: DF ankle, evert IT (STJ) Innervation: Deep fibular nerve
36
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
37
Gastrocnemius
Origin: Medial and lateral epicondyles of femur Insertion: Calcaneal tuberosity via Achilles tendon Action: PF ankle, invert IT (STJ), flex knee Innervation: Tibial nerve
38
Plantaris
Origin: Lateral epicondyle of femur Insertion: Calcaneal tuberosity via Achilles tendon Action: Small contributor PF ankle, invert IT (STJ), flex knee Innervation: Tibial nerve
39
Tibialis Posterior
Origin: Posterior tibia, IO membrane, posterior fibula Insertion: Navicular, medial, lateral, and intermediate cuneiforms, base of MT 2-4 Action: PF ankle, invert IT (STJ) Innervation: Tibial nerve
40
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
41
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
42
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
43
Extensor hallucis brevis
Origin: Dorsal surface calcaneus Insertion: Base of 1st proximal phalanx Action: Ext MTP 1 Innervation: Deep fibular nerve
44
Abductor hallucis
Origin: Medial calcaneus Insertion: Base of 1st proximal phalanx Action: Abd MTP 1, flex MTP 1 Innervation: Medial plantar nerve
45
Flexor hallucis brevis (med head)
Origin: Medial cuneiform Insertion: Base of 1st proximal phalanx Action: Flex MTP 1 Innervation: Medial plantar nerve
46
Flexor hallucis brevis (lat. head)
Origin: intermediate cuneiform Insertion: base of 1st proximal phalanx Action: flex MTP 1 Innervation: Lateral plantar nerve
47
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
48
Adductor hallucis (transverse head)
Origin: Deep transverse MT lig, MTP 3-5 Insertion: Base of 1st prox. phalanx Action: Add MTP 1, support transverse arch Innervation: Lat. plantar nerve
49
Abductor digiti minimi
Origin: Lateral calcaneal tuberosity Insertion: Base of 5th prox. phalanx Action: Abd MTP 5, flex MTP 5 Innervation: Lat. plantar nerve
50
Flexor Digiti Minimi
Origin: Base of 5th MT Insertion: Base of 5th prox. phalanx Action: Flex MTP 5 Innervation: Lat. plantar nerve
51
Flexor digitorum brevis
Origin: calcaneal tuberosity Insertion: middle phalanges 2-5 Action: flex MTP 2-5, flex PIP 2-5 Innervation: Medial plantar nerve
52
Quadratus plantae
Origin: calcaneal tuberosity Insertion: lat. border of FDL tendon Action: redirects and augments pull of FDL Innervation: Lat. plantar nerve
53
Lumbricals (1-4)
Origin: medial border FDL tendons Insertion: dorsal aponeuroses 2-5 Action: flex MTP 2-5, Ext IP 2-5, Add MTP 3-5, Abd MTP 2 Innervation: 1st lumbrical (med. plantar nerve), 2-4 lumbricals (lat. plantar nerve)
54
Plantar interossei (1-3)
Origin: medial border of MT 3-5 Insertion: medial base of prox. phalanges 3-5 Action: Add MTP 3-5 Innervation: Lat. plantar nerve
55
Dorsal interossei (1-4)
Origin: two heads from opposing sides of MT 1-5 Insertion: 1st interosseus (medial base of 2nd prox. phalanx), 2-4 interossei (lat. base of prox. phalanges 2-4) Action: Abd MTP 2-4 Innervation: Lat. plantar nerve

Anatomy (12 decks)

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