Lower Limb Muscles Flashcards

Pectineus
Attachments of pectineus
Prox: Pecten pubis and superior ramus of pubis
Dist: Pectineal line of the femus
Action, supply, innervation of pectineus
Action: Adducts and flexes thigh
Innervation: Femoral nerve and obturator nerve
Supply: Medial circumflex femoral artery

Iliopsoas

Iliopsoas attachments
Prox: Iliac fossa (iliacus) and vertevrae T12-L5 (psoas major)
Dist: Lesser trochanter of femur
Action, innervation, supply of iliopsoas
Action: Flexes thigh
Innervation: Femoral Nerve
Supply: Lumbar arteries (psoas) and ,edial coircumflex femoral artery (iliacus)

Sartorius
Sartorius Attachments
Prox: Anterior superior iliac spine
Dist: Medial surface of proximal tibia
Action, innervation, and supply of sartorius
Action: Flexes and laterally rotates thigh, flexes and medially rotates leg
Innervation: Femoral nerve
Supply: Lateral circumflex femoral artery

Tensor Fascia Lata
TFL Attachments
Prox: Anterior superior iliac spine
Dist: Iliotibial tract
Action, innervation, supply of TFL
Action: Abducts, medially rotates, and flexes thigh
Innervation: Superior gluteal nerve
Supply: Superior and inferior gluteal artery

Rectus femoris
Rectus femoris attachments
Prox: Anterior inferior iliac spine
Dist: Tibial tuberosity
Action, innervation, supply of rectus femoris
Action: Flexes thigh and extends leg
Innervation: Femoral nerve
Supply: Lateral circumflex femoral artery

Vastus medialis
Vastus medialis attachments
Prox: lateral linea aspera and greater trochanter
Dist: Tibial tuberosity
Action, innervation, and supply for Vastus medialis, vastus lateralis, and vastus intermedius
Action: Extends leg
Innervation: femoral nerve
Supply: Lateral circumflex femoral artery

Vastus lateralis
Vastus lateralis attachments
Prox: Medial linea aspera and intertochanteric line
Dist: Tibial tuberosity

Vastus intermedius
Vastus intermedius attachments
prox: Anterior and lateral surfaces of femur
dist: Tibial tuberosity

Gracilis
Gracilis attachments
Prox: Body of pubis and inferior pubic ramus
Dist: Superior medial surface of tibia
Action, innervation, and supply for Gracilis
Action: Adducts thigh, flexes and internally rotates leg
Innervation: Obturator n.
Supply: Obturator artery

Pectineus
Pectineus attachments
prox: superior pubic ramus
dist: pectineal line
action, innervation, supply Pectineus
action: adducts thigh
innervation: obturartor amnd femoral n
supply: medial circumflex femoral artery

Adductor longus
Adductor longus attachments
prox: Body of pubis inferior to pubic crest
dist: middle third of linea aspera
Action, innervation, supply Adductor longus
action: adducts thigh
innervation: obturator n
supply: obturatory and deep femoral a

Adductor brevis
Adductor brevis attachments
prox: body of pubis and inferior pubic ramus
dist: pectineal line and proximal part of linea aspera
action, innervation, supply Adductor brevis
a: Adducts thigh
I:Obturator n
S: Obturator and deeo femoral a

Adductor Magnus
Adductor Magnus attachments
prox: ischiopubic ramus and ischial tuberosity
Dist: Linea aspera and adductor tubercle of femur
Adductor Magnus action, innervation, supply
action: adducts and extends thigh
innervation: obturator and tibial division of sciatic n
supply: obturator and deep femoral artery

Obturator externus
Obturator externus attachments
prox: obturator foramen and obturator membrane
dist: trochanteric fossa of femur
action, innervation, supply of Obturator externus
action: laterally rotates thigh
innervation: obturator n
supply: obturator a

Gluteus maximus
Gluteus maximus attachments
prox: illium, sacrum and coccyx, sacrotuberous ligament
dist: iliotibial tract and gluteal tuberosity
Gluteus maximus action, innervation, supply
action: extends and laterally rotates thigh
innervation: inferior gluteal n
supply: superior and inferior gluteal a

Gluteus medius
Gluteus medius attachments
prox: ilium bw anterior and posterior gluteal lines
dist: lateral surface of greater trochanter
Gluteus medius action, innervation, supply
action: Abducts and medially rotates thigh
innervation: superior gluteal nerve
Supply: superior gluteal a

Gluteus minimus
Gluteus minimus attachments
prox: lateral surface of ilium
dist: lateral surface of greater trochanter
Gluteus minimus actions, innervation, supply
action: Abducts and medially rotates thigh
innervation: superior gluteal nerve
supply: superior gluteal artery

Piriformis
Piriformis attachments
prox: anterior surface of sacrum
dist: greater trochanter
Piriformis action, innervation, supply
action: laterally rotates thigh
innervation: anterior rami of S1 and S2
supply: Superior and inferior gluteal a, internal pudendal a

Obturator internus
Obturator internus attachments
prox: obturator foramen
dist: greater trochanter
Obturator internus action, innervation, supply
action: laterally rotates thigh
innervation: nerve to obturator internus
supply: obturator a

superior gemellus
superior gemellus attachments
prox: ischial spine
dist: greater trochanter and obturator internus tendon
superior gemellus action, innervation, supply
action: laterally rotates this
innervation: nerve to obturator internus
supply: inferior gluteal a

inferior gemellus
inferior gemellus attachments
prox: ischial tuberosity
dist: greater trochanter and obturator internus tendon
inferior gemellus action, innervation, supply
action: laterally rotates thigh
innervation: nerve to quadratus femoris
supply: inferior gluteal artery

Quadratus femoris
Quadratus femoris attachment
prox: ischial tuberosity
dist: quadrate tubercle
Quadratus femoris action, innervation, supply
action: laterally rotates thigh
innervation: nerve to quadratus femoris
supply: inferior gluteal a

Biceps femoris
Biceps femoris attachments
prox: ischial tuberosity (long) and linea aspera (short)
dist: head of fibula
Biceps femoris actions, innervation, supply
action: long head extends thigh, both flex leg
innervation: Long- tibial division of sciatic, short- fibula division of sciatic
supply: deep femoral a

semitendinosus
semitendinosus attachments
prox: ischial tuberosity
dist: medial superior tibia
semitendinosus actions, inn, supply
action: extends thigh, flexes and medially rotates leg
innervtaion: tibial division of sciatic nerve
supply: deep femoral a

semimembranosus
semimembranosus attachments
prox: ischial tuberosity
dist: posterior medial epicondyle of tibia
semimembranosus, a i s
action: extends thigh, medially rotates and flexes leg
innervation: tibial division of sciatic nerve
supply: deep femoral a

popliteus
popliteus attachments
prox: lateral condyle of femur
dist: posterior surface of tibia
popliteus, a i s
action: unlocks extended knee, weak leg flexor
innervation: tibial n
supply: popliteal a

Gastrocnemius
Gastrocnemius attachments
prox: superior to lateral and medial femoral condyles
distal: Posterior surface of calcaneus
Gastrocnemius action, innervation, supply
action: plantarflex foot and flex knee
innervation: Tibial nerve
supply: sural and posterior tibial arteries

Plantaris
Plantaris attachments
prox: lateral supracondylar line of femur
dist: Posterior surface of calcaneus
Plantaris a, i , s
action: plantarflex foot and flex knee
innervation: tibial nerve
supply: Popliteal artery

Soleus
Soleus attachments
prox: soleal line of tibia and head of fibula
dist: posterior calcaneus
Soleus a, i, s
action: plantarflex foot
innervation: Tibial nerve
supply: Posterior tibial a

tibialis posterior
tibialis posterior attachments
prox: tibia, fibula, introsseous membrane
dist: Navicular, cuneiform, cuboid, and bases of metatarsals 2–4
tibialis posterior a, i, s
action: inverts and plantarflexes foot
innervation: tibial n
supply: fibular and posterior tibial a

flexor digitorum longus
flexor digitorum longus attachments
prox: posterior surface of tibia, below soleal line
dist: base of distal phalanges of lateral 4 toes
flexor digitorum longus a, i, s
action: flexes toes 2-5, plantarflexes foot
innervation: tibial nerve
supply: posterior tibial artery

flexor hallucis longus
flexor hallucis longus attachments
prox: fibula and interosseous membrane
dist: base of distal phalanx of big toe
flexor hallucis longus a, i,s
action: flexes big toes and plantarflexes foot
innervation: tibial nerve
supply: fibular and posterior tibial a

fibularis longus
fibularis longus attachments
prox: head and lateral surface of fibula
dist: base of first metatarsal and medial cuneiform
fibularis longus a, i, s
action: evert and pklantarflex foot
innervation: superficial fibular n
supply: fibular a

fibularis brevis
fibularis brevis attachment
prox: lateral surface of fibula
dist: tuberosity of fifth metatarsal
fibularis brevis a,i ,s
action: evert and plantarflex foot
innervation: superficial fibular n
supply: fibular a

tibialis anterior
tibialis anterior attachments
prox: lateral condyle and lateral surface of tibia
dist: first metatarsal and medial cuneiform
tibialis anterior a, i, s
action: dorsiflex and invert foot
innervation: deep fibular n
supply: anterior tibial a

extensor hallucis longus
extensor hallucis longus attachments
prox: anterior surface of fibula and interosseous membrane
dist: distal phalanx of big toe
extensor hallucis longus a, i, s
action: extend big toe amnd dorsiflex foot
innervation: deep fibular n
supply: anterior tibial a

extensor digitorum longus
extensor digitorum longus attachments
prox: lateral condyle of tibia and interrosseous membrane
dist: extensor expansion of lateral four toes
extensor digitorum longus a, i, s
action: extends lateral four digits and dorsiflex foot
innervation: deep fibular n
supply: anterior tibial a

fibularis tertius
fibularis tertius attachments
prox: anterior surface of fibula and interroseous membrane
dist: base of fifth metatarsal
fibularis tertius a, i, s
action: dorsiflex and evert foot
innervation: deep fibular n
supply: anterior tibial a