Lower Limb Muscles Flashcards

1
Q

Sartorius

A

ASIS to pes anserinus
Flexes, abducts and laterally rotates thigh at hip, flexes knee
Femoral nerve

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2
Q

Iliopsoas

A

Transverse process of L4 + L5 (psoas) and iliac fossa (iliacus) to lesser trochanter of femur

Flexes and laterally rotates hip, also flexes torso

Sacral roots

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3
Q

Tensor Fascia Lata

A

Anterior iliac crest to lateral condyle of tibia via iliotibial tract

Abducts and flexes the thigh at the hip

Superior gluteal nerve

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4
Q

Rectus Femoris

A

AIIS and superior acetablum (2 heads) to quadriceps tendon at base of patella and tibial tuberosity

Flexes thigh, extends leg at knee

Femoral nerve

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5
Q

Vastus Lateralis

A

Greater trochanter and linea aspera to the base of the patella via the patellar tendon

Extends leg at the knee

Femoral nerve

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6
Q

Vastus Medialias

A

Intertrochanteric line to the base of patella via the patellar tendon

Extends leg at knee

Femoral nerve

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7
Q

Vastus Intermedius

A

Anterior and lateral femur to the base of patella via the patellar tendon

Extends leg at the knee

Femoral nerve

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8
Q

Pectineus

A

Superior pubic rami to the medial/post. side of femur and linea aspera

Adducts, rotates and flexes thigh at hip

Femoral Nerve

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9
Q

Adductor Longus

A

Pubis to middle third of linea aspera

Adducts, rotates and flexes thigh at hip

Obturator Nerve

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10
Q

Adductor Brevis

A

Pubic ramus (inferior) to linea aspera

Adducts, rotates and flexes thigh at hip

Obturator Nerve

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11
Q

Adductor Magnus

A

Inferior pubic ramus, ischium and ischial tuberosity to linea aspera (oblique) and adductor tuberosity (vertical)

Oblique Head – adducts, rotates and flexes thigh
Vertical Head – extends thigh

Oblique head – obturator nerve
Vertical head – tibial branch of sciatic nerve

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12
Q

Gracilis

A

Pubis and inferior pubic ramus to pes anserinus

Adducts thigh, flexes and rotates the leg

Obturator Nerve

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13
Q

Gluteus Maximus

A

Ilum, sacrum and sacrotuberous ligament to the gluteal tuberosity of femur and the IT band

Extends thigh and assists in adduction and lateral rotation
Inferior gluteal nerve

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14
Q

Gluteus Medius

A

Lateral surface of ilium to the greater trochanter

Abducts thigh at hip and laterally rotates thigh

Superior gluteal nerve

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15
Q

Gluteus Minimus

A

Ilium to greater trochanter

Abducts thigh

Superior gluteal nerve

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16
Q

Piriformis

A

Anterior surface of sacrum to greater trochanter

Laterally rotates thigh and abducts thigh when limb is flexed

Branch of sacral plexus (S1, S2)

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17
Q

Superior Gemellus

A

Ischial spine to medial greater trochanter

Laterally rotates thigh

Nerve to obturator internus

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18
Q

Obturator Internus

A

Inside of obturator membrane and foramen to the medial greater trochanter

Laterally rotates thigh and abducts thigh when limb is flexed

Nerve to obturator internus

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19
Q

Inferior Gemellus

A

Ischial tuberosity to the medial greater trochanter

Laterally rotates the thigh

Nerve to quadratus femoris

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20
Q

Obturator Externus

A

External border of obturatur foramen to the trochanteric fossa

Laterally rotates thigh and stabilizes head of femur and adducts thigh

Obturater nerve

21
Q

Quadratus Femoris

A

Ischial tuberosity to greater trochanter and intertrochanteric crest

Laterally rotates and helps adduct thigh

Nerve to quadratus femoris

22
Q

Semimembranosus

A

Ischial tuberosity to the posterior medial condyle of tibia

Flexes leg and extends thigh

Tibial division of sciatic nerve

23
Q

Semitendenosus

A

Ischial tuberosity to pes anserinus

Flexes leg and extends thigh

Tibial division of sciatic nerve

24
Q

Gastrocnemius

A

Lateral head - lateral condyle of the femur
Medial head - medial condyle of the femur and the popliteal surface
To the posterior calcaneous via the calcaneal tendon

Plantar flexion and assists in leg flexion at the knee

Tibial nerve

24
Soleus
Posterior head of the fibula and the soleal line to the posterior calcaneus via the calcaneal tendon plantar flexion and stabilizes the leg tibial nerve
25
Plantaris
Popliteal surface to the calcaneal tendon Weakly assists the gastrocnemius tibial nerve
26
Popliteus
Lateral condyle of the femur and lateral meniscus to the posterior tibia Medially rotates the knee but lateral rotates femur laterally when foot is on ground to unlock the knee Tibial nerve
27
Flexor Digitorum Longus
Med. post. tibia and inferior soleal line to the plantar bases of the 2-5 distal phalanges Plantar flexion and 2-5 toe flexion Tibial nerve
28
Tibialis Posterior
Lat. Post. Tibia, post. fibula and interosseous membrane to navicular tuberosity, all cuneiforms, cuboid and metatarsals 2-5 Plantar flexes ankle and inverts the foot Tibial nerve
29
Flexor Hallucis Longus
Distal 2/3 of post. fibula and interosseous membrane to the base of the 1st distal phalanx Plantar flexion and 1st digit flexion Tibial nerve
30
Fibularis Longus
Head and proximal 2/3 of the fibula to the base of the 1st metatarsal and medial cuneiform Foot eversion and weak plantar flexion Superficial fibular nerve
31
Fibularis Brevis
Distal 1/3 of the lat. fibula to the base of the 5th metatarsal Foot eversion and weak plantar flexion Superficial fibular nerve
32
Biceps Femoris
Long head - ischial tuberosity Short head - lateral lip of linea aspera lat condyle of the posterior tibia and the post head of the fibula Flexes and laterally rotates leg and extends thigh long head - tibial division short head - common fibular nerve
33
Tibialis Anterior
Lateral condyle and prox ½ of lat. Tibia to the medial cuneiform and base of 1st metatarsal Dorsiflexes the ankle and inverts the foot Deep fibular nerve
34
Extensor Hallucis Longus
Middle anterior fibula and interosseous membrane to the base of the 1st distal phalynx 1st digit extension and dorsiflexion deep fibular nerve
35
Extensor Digitorum Longus
Lateral condyle of the tibia and interosseous membrane to the base of the 2-5 distal phalanges 2-5 digit extension and dorsiflexion deep fibular nerve
36
Fibularis Tertius
Distal 1/3 of the ant. fibula and interosseous membrane to the base of the 5th metatarsal foot eversion and dorsiflexion deep fibular nerve
37
Abductor Digiti Minimi
Calcaneal tuberosity to the lateral base of the 5th proximal phalynx Abducts the little toe Lateral Plantar Nerve
38
Abductor Hallucis
Calcaneal tuberosity to the medial base of the 1st proximal phalynx Abducts the big toe Medial Plantar Nerve
39
Flexor Digitorum Brevis
Calcaneal tuberosity to the plantar bases of the 2-5 middle phalanges (bifid) 2-5 digit flexion at the metatarsophalangeal joint and the proximal interphalangeal joint Medial plantar nerve
40
Quadratus Plantae
Body of the calcaneus to the the flexor digitorum longus tendons Helps correct line of pull Lateral plantar nerve
41
Lumbricals
Tendons of the flexor digitorum longus to the medial base of proximal phalanges 2-5 and dorsal expansion 2-5 digit flexion at the metatarsophalangeal joint and extension at the proximal and distal interphalangeal joints 1st - medial plantar nerve 2,3,4 - lateral plantar nerve
42
Flexor Digiti Minimi brevis
base of the 5th metatarsal to the lateral base of the 5th proximal phalanx flexes the little toe at the metatarsophalangeal joint lateral plantar nerve
43
Adductor Hallucis
two heads: 1) oblique: bases of the 2,3,4 metatarsals 2) transverse head: ligaments of 3,4,5 MP joints both attach to the medial base of the 1st proximal phalanx adducts the big toe lateral plantar nerve
44
Flexor Hallucis brevis
Cuboid and lateral cuneiform to the medial base of the 1st proximal phalanx Flexes the big toe at the metatarsophalangeal joint Medial Plantar nerve
45
Dorsal Interossei
Sides of adjacent metatarsals to the dorsal expansion and proximal phalanges 2-4 Abduction of the 2,3,4 digits Lateral Plantar nerve
46
Plantar Interossei
Medial side of the 3-5 metatarsals to the dorsal expansion and medial side of proximal phalanges 3-5 Adduction of the 3-5 digits Lateral plantar nerve
47
Extensor Digitorum Brevis
Superior Calcaneus to the lateral sides of extensor digitorum longus tendons Extends the 2-5 digits Deep fibular nerve
48
Extensor Hallucis Brevis
Superior calcaneus to the base of the 1st proximal phalanx Extends the big toe at the metatarsophalangeal joint Deep fibular nerve