MUSCLES OF PELVIS & LOWER EXTREMITY Flashcards
anterior hip iliopsoas
psoas major
psoas minor
iliacus
psoas major origin
Transverse processes
& bodies of lumbar
vertebrae
psoas major insertion
Lesser trochanter
of femur (fusing
with iliacus)
psoas major action
Flexion & lateral
rotation of thigh at
hip jnt. and flexion
of trunk on hip
psoas major innervation
Lumbar spinal
n. L2-L3
Psoas minor origin
12th thoracic & 1st
lumbar vertebrae
Psoas minor insertion
Iliopectineal line
or fused with
psoas major
Psoas minor action
Flexion of pelvis on
abdomen
Psoas minor innervation
lumbar plexus
Iliacus origin
Iliac fossa & sacrum
Iliacus insertion
Tendon of psoas major into lesser
trochanter of
femur
Iliacus action
Flexion & lateral
rotation of thigh at
hip jnt.
Iliacus innervation
Femoral n.
posterior-lateral hip
gluteus maximus
gluteus medius
gluteus minimus
tensor fascia latae
gluteus maximus origin
Iliac crest, posterior gluteal line, sacrum &
соссух
gluteus maximus insertion
Iliotibial tract of
tensor fascia latae & gluteal
tuberosity of
femur
gluteus maximus action
Extension & lateral
rotation of thigh
gluteus maximus innervation
Inferior gluteal
n.
Gluteus medius origin
Ilium between
anterior & posterior
gluteal lines
Gluteus medius insertion
Greater
trochanter of
femur
Gluteus medius action
Abduction &
medial rotation of
thigh
Gluteus medius innervation
Superior gluteal n.
Gluteus minimus origin
Ilium between
anterior & inferior
gluteal lines
Gluteus minimus insertion
Greater
trochanter of
femur
Gluteus minimus action
Abduction &
medial rotation of
thigh
Gluteus minimus innervation
Superior gluteal
n.
Tensor fascia latae origin
Anterior superior iliac
spine & iliac crest
Tensor fascia latae insertion
Iliotibial tract
which attaches to
lateral tibia
Tensor fascia latae action
Flexion &
abduction of thigh
at hip jnt.
Tensor fascia latae innervation
Superior gluteal
n.
Lateral rotators
piriformis
superior gemellus
obturator internus
inferior gemellus
quadratus femoris
obturator externus
piriformis origin
Anterior surface of sacrum
piriformis insertion
Greater trochanter of femur
piriformis action
Lateral rotation & abduction of thigh at hip jnt.
piriformis innervation
sacral plexus
Superior gemellus origin
Ischial spine
Superior gemellus insertion
Greater trochanter of femur
Superior gemellus action
Lateral rotation & abduction of thigh at hip jnt.
Superior gemellus innervation
lumbosacral plexus
Obturator internus origin
Inner surface of obturator foramen, pubis & ischium
Obturator internus insertion
Greater trochanter of femur
Obturator internus action
Lateral rotation & abduction of thigh at hip jnt.
Obturator internus innervation
Lumbosacral
plexus
inferior gemellus origin
Ischial tuberosity
inferior gemellus insertion
Greater trochanter of femur
inferior gemellus action
Lateral rotation & abduction of thigh at hip jnt.
inferior gemellus innervation
Lumbosacral
plexus
Quadratus femoris origin
Ischial tuberosity
Quadratus femoris insertion
Quadrate
tubercle of femur
Quadratus femoris action
Lateral rotation of thigh at hip jnt.
Quadratus femoris innervation
Lumbosacral
plexus
Obturator externus origin
Outer surface of obturator foramen & membrane
Obturator externus insertion
Trochanteric fossa of femur
Obturator externus action
Lateral rotation & abduction of thigh at hip jnt.
Obturator externus innervation
Obturator n.
anterior thigh
sartorius
rectus femoris
vastus lateralis
vastus medialis
vastus intermedius
sartorius origin
Anterior superior iliac spine
sartorius insertion
Proximal, medial
surface of shaft of tibia
sartorius action
Flexion, abduction & lateral rotation of thigh at hip joint, flexion of leg at knee jnt.
sartorius innervation
femoral n.
rectus femoris origin
Anterior inferior iliac spine
rectus femoris insertion
Patella via quadriceps tendon & then tibial tuberosity via patellar ligament
rectus femoris action
Extension of leg at knee jnt. & flexion of thigh at hip jnt.
rectus femoris innervation
femoral n.
vastus lateralis origin
Greater trochanter and lateral margin of linea aspera of femur
vastus lateralis insertion
Patella via quadriceps tendon & then tibial tuberosity via patellar ligament
vastus lateralis action
Extension of leg at knee jnt.
vastus lateralis innervation
femoral n.
vastus medialis origin
Medial margin of linea aspera of femur
vastus medialis insertion
Patella via quadriceps
tendon & then tibial tuberosity via patellar ligament
vastus medialis action
Extension of leg at knee jnt.
vastus medialis innervation
femoral n.
vastus inermedius origin
Anterior and lateral surfaces of shaft of femur
vastus inermedius insertion
Patella via quadriceps
tendon & then tibial tuberosity via patellar ligament
vastus inermedius action
Extension of leg at knee jnt.
vastus inermedius innervation
femoral n.
medial thigh
pectineus
adductor brevis
adductor longus
adductor magnus
adductor minimus (part of adductor magnus)
gracilis
pectineus origin
superior ramus of pubis
pectineus insertion
Pectineal line of femur, between lesser trochanter and linea aspera
pectineus action
Flexion & adduction of thigh at hip jnt.
pectineus innervation
femoral n.
Adductor brevis origin
Inferior ramus of pubis
Adductor brevis insertion
Superior half of linea aspera of femur
Adductor brevis action
Adduction &
flexion of thigh at hip jnt., rotates thigh*
Adductor brevis innervation
Obturator n.
Adductor longus origin
Pubic crest & pubic symphysis
Adductor longus insertion
Linea aspera of femur
Adductor longus action
Adduction &
flexion of thigh at hip jnt., rotates thigh*
Adductor longus innervation
obturator n.
Adductor Magnus origin
Inferior ramus of pubis & ischium to ischial tuberosity
Adductor Magnus insertion
Linea aspera and adductor tubercle of femur
Adductor Magnus action
Adduction of thigh at hip jnt.- anterior fibers flex thigh & posterior fibers extend thigh, rotates thigh*
Adductor Magnus innervation
Obturator & sciatic n.
adductor minimus origin
Inferior ramus of pubis
adductor minimus insertion
Medial lip of linea aspera of femur
adductor minimus action
Adduction and lateral rotation of thigh at hip jnt.
adductor minimus innervation
Obturator n.
Gracilis origin
Body & inferior ramus of pubis
Gracilis insertion
proximal, medial surface of shaft of tibia
Gracilis action
adduction of thigh at hip jnt. flexion and medial rotation of leg at knee jnt.
Gracilis innervation
obturator n.
posterior thigh
biceps femoris
semi-tendinosus
semi-membranosus
biceps femoris origin
- Long head: Ischial tuberosity
- Short head: Linea aspera of femur
biceps femoris insertion
Head of fibula and lateral condyle of tibia
biceps femoris action
Flexion of leg at knee jnt. & extension of thigh at hip jnt.
biceps femoris innervation
Sciatic n. (tibial & common fibular n.)
semi-tendinosus origin
Ischial tuberosity
semi-tendinosus insertion
Proximal, medial surface of shaft of tibia
semi-tendinosus action
Flexion of leg at knee jnt. & extension of thigh at hip jnt.
semi-tendinosus innervation
Sciatic n. (tibial n.)
semi-membranosus origin
Ischial tuberosity
semi-membranosus insertion
Medial condyle of tibia
semi-membranosus action
Flexion of leg at knee jnt. & extension of thigh at hip jnt.
semi-membranosus innervation
Sciatic n. (tibial n.)
anterior leg
tribialis anterior
extensor hallucis longus
extensor digitorum longus
fibularis (peroneus) tertius N.A.P.
tribialis anterior origin
Lateral condyle and shaft of tibia & interosseus membrane
tribialis anterior insertion
1st metatarsal &
1st cuneiform
tribialis anterior action
Dorsiflexion & inversion of foot
tribialis anterior innervation
Deep fibular (peroneal) n.
Extensor hallucis longus origin
Anterior surface of fibula & interosseous membrane
Extensor hallucis longus insertion
Distal phalanx of 1st toe
Extensor hallucis longus action
Dorsiflexion of foot & extension of 1st toe
Extensor hallucis longus innervation
Deep fibular (peroneal) n.
Extensor digitorum longus origin
Lateral condyle of tibia, anterior surface of fibula & interosseous membrane
Extensor digitorum longus insertion
Middle & distal phalanges of toes 2-5
Extensor digitorum longus action
Dorsiflexion of foot & extension of digits 2-5
Extensor digitorum longus innervation
Deep fibular (peroneal) n.
fibularis (peroneus) tertius N.A.P. origin
Distal ⅓ of fibula & interosseous membrane
fibularis (peroneus) tertius N.A.P. insertion
Base of 5th metatarsal
fibularis (peroneus) tertius N.A.P. action
Dorsiflexion & eversion of foot
fibularis (peroneus) tertius N.A.P. innervation
Deep fibular (peroneal) n.
posterior leg (superficial)
gastrocnemius
soleus
plantaris N.A.P.
gastrocnemius (lateral & medial heads) origin
Lateral and medial
condyles of femur
gastrocnemius (lateral & medial heads) insertion
Calcaneus by way of calcaneal (Achilles) tendon
gastrocnemius (lateral & medial heads) action
plantar flexion of foot at ankle jnt. & flexion of leg at knee jnt.
gastrocnemius (lateral & medial heads) innervation
tibia n.
Soleus origin
Head of fibula & soleal line of tibia
Soleus insertion
Calcaneus by way of calcaneal (Achilles) tendon
Soleus action
Plantarflexion of foot at ankle jnt.
Soleus innervation
tibia n.
Plantaris N.A.P. origin
Lateral supracondylar ridge of femur
Plantaris N.A.P. insertion
Calcaneus by way of calcaneal (Achilles) tendon
Plantaris N.A.P. action
Plantarflexion of foot at ankle jnt. & flexion of leg at knee jnt.
Plantaris N.A.P. innervation
tibia n.
posterior leg (deep)
popliteus
tibialis posterior
flexor digitorum longus
flexor hallucis longus
Popliteus origin
Lateral condyle of femur
Popliteus insertion
Proximal tibia-above popliteal line
Popliteus action
Flexion & medial rotation of leg at knee jnt.;
unlocking of extended knee
Popliteus innervation
tibia n.
Tibialis posterior origin
Posterior tibia, posterior fibula & interosseous membrane
Tibialis posterior insertion
Navicular, cuboid, 3 cuneiforms & bases of metatarsals 2-4
Tibialis posterior action
Plantarflexion & inversion of foot at ankle jnt.
Tibialis posterior
tibia n.
flexor digitorum longus origin
Posterior surface of tibia
flexor digitorum longus insertion
Distal phalanges of toes 2-5
flexor digitorum longus action
Flexion of digits 2-5 & plantarflexion of foot at ankle jnt.
flexor digitorum longus innervation
tibia n.
Flexor hallucis longus origin
Distal ⅔ of fibula
Flexor hallucis longus insertion
Distal phalanx of 1st toe
Flexor hallucis longus action
Flexion of 1st toe & plantarflexion of foot
Flexor hallucis longus innervation
tibia n.
lateral leg
fibularis (peroneus) longus
fibularis (peroneus) brevis
fibularis (peroneus) longus origin
Head & proximal ⅔ of fibula
fibularis (peroneus) longus insertion
1st metatarsal &1st cuneiform
fibularis (peroneus) longus action
Plantarflexion & eversion of foot at ankle jnt.
fibularis (peroneus) longus innervation
Superficial fibular (peroneal) n.
fibularis (peroneus) brevis origin
Distal ⅔ of shaft of fibula
fibularis (peroneus) brevis insertion
Base of 5th metatarsal
fibularis (peroneus) brevis action
Plantarflexion & eversion of foot at ankle jnt.
fibularis (peroneus) brevis innervation
superficial fibular (peroneal) n.
dorsum foot
extrensor digitorum brevis
extrensor hallucis brevis
extrensor digitorum brevis innervation
deep peroneal n.
extrensor hallucis brevis innervation
deep peroneal n.
plantar foot first layer
flexor digitorum brevis
abductor hallucis
abductor digiti minimi
flexor digitorum brevis innervation
medial plantar n.
abductor hallucis innervation
medial plantar n.
abductor digit minimi innervation
lateral plantar n.
plantar foot second layer
quadratus plantae
lumbricals
quadratus plantae action
flexion of toes 2-5
quadratus plantae innervation
lateral plantar n.
lumbricals action
flexion of proximal phalanges, extension of middle & distal phalanges of toes 2-5
lumbricals innervation
medial & lateral plantar n.
plantar foot third layer
flexor hallucis brevis
adductor hallucis
flexor digiti minimi brevis
flexor hallucis brevis innervation
medial plantar n.
adductor hallucis innervation
lateral plantar n.
flexor digiti minimi brevis innervation
lateral plantar n.
plantar foot fourth layer
dorsal interossei (4)
plantar interossei (3)
dorsal interossei (4) action
abduction of toes
dorsal interossei (4) innervation
lateral plantar n.
plantar interossei (3) action
adduction of toes
plantar interossei (3) innveration
lateral plantar n.
medial thigh
pectineus
adductor brevis
adductor longus
adductor magnus
adductor minimus (part of adductor magnus)
gracilis
pectineus origin
superior ramus of pubis
pectineus insertion
Pectineal line of femur, between lesser trochanter and linea aspera
pectineus action
Flexion & adduction of thigh at hip jnt.
pectineus innervation
femoral n.
Adductor brevis origin
Inferior ramus of pubis
Adductor brevis insertion
Superior half of linea aspera of femur
Adductor brevis action
Adduction &
flexion of thigh at hip jnt., rotates thigh*
Adductor brevis innervation
Obturator n.
Adductor longus origin
Pubic crest & pubic symphysis
Adductor longus insertion
Linea aspera of femur
Adductor longus action
Adduction &
flexion of thigh at hip jnt., rotates thigh*
Adductor longus innervation
obturator n.
Adductor Magnus origin
Inferior ramus of pubis & ischium to ischial tuberosity
Adductor Magnus insertion
Linea aspera and adductor tubercle of femur
Adductor Magnus action
Adduction of thigh at hip jnt.- anterior fibers flex thigh & posterior fibers extend thigh, rotates thigh*
Adductor Magnus innervation
Obturator & sciatic n.
adductor minimus origin
Inferior ramus of pubis
adductor minimus insertion
Medial lip of linea aspera of femur
adductor minimus action
Adduction and lateral rotation of thigh at hip jnt.
adductor minimus innervation
Obturator n.
Gracilis origin
Body & inferior ramus of pubis
Gracilis insertion
proximal, medial surface of shaft of tibia
Gracilis action
adduction of thigh at hip jnt. flexion and medial rotation of leg at knee jnt.
Gracilis innervation
obturator n.