LE muscles (with pictures) Flashcards
Give the name, origin, insertion, action and innervation of the muscle indicated
Psoas Major
Origin: T12-L4 vertebral bodies
Insertion: Lesser trochanter
via Iliopsoas tendon
Action: Flex hip, ER hip, Flex lumbar spine
Ipsilat flex spine
Innervation: L1-L3 direct branches from lumbar plexus
Blood: lumbar arteries
Give the name, origin, insertion, action and innervation of the muscle indicated
Iliacus
Origin: Iliac fossa
Insertion: Lesser trochanter of femur
via Iliopsoas tendon
Action: Flex hip
ER hip
Innervation: Femoral N
Blood: Deep Circumflex Iliac
Give the name, origin, insertion, action and innervation of the muscle indicated
Sartorius
Origin: ASIS
Insertion: Med to the Tibial Tuberosity via Pes Anserinus
Action: Flex hip, Abd hip, ER hip, Flex knee, IR tibia
Innervation: Femoral nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
- *Gluteus Maximus** (upper)
- *Origin**: Sacrum, Gluteal surface ilium, Thoracolumbar fascia
Insertion: Lateral condyle tibia via Iliotibial tract
Action: Ext hip, ER hip
Innervation: Abd hip Inferior gluteal nerve
Gluteus Maximus (lower)
Origin: Sacrum, Gluteal surface ilium, Thoracolumbar fascia, Sacrotuberous ligament
Insertion: Gluteal tuberosity
Action: Ext hip, ER hip, Add hip
Innervation: Inferior gluteal nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Gluteus Medius
Origin: Superior gluteal surface ilium
Insertion: Lateral Greater trochanter
- *Action**: Abd hip
- *Ant**: Flex and IR hip
- *Post**: Ext and ER hip
Innervation: Superior gluteal nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Gluteus Minimus
Origin: Inferior gluteal surface ilium (below origin of glut med)
Insertion: Anterior Greater trochanter
- *Action**: Abd hip
- *Ant**: Flex and IR hip
- *Post**: Ext and ER hip
Innervation: Superior gluteal nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Tensor Fasciae Latae
Origin: ASIS
Insertion: Lateral condyle tibia via Iliotibial tract
Action: Tenses fascia lata, Abd hip, Flex hip, IR hip
Innervation: Superior gluteal nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Piriformis
Origin: Ant surface sacrum
Insertion: Greater trochanter apex
Action: ER hip, Abd hip, Ext hip
Innervation: L5-S2 direct branches from sacral plexus
Give the name, origin, insertion, action and innervation of the muscle indicated
Gemellus Superior
Origin: Ischial spine
Insertion: Greater trochanter
Action:
ER hip
Add hip < 30 Abd
Abd hip > 30 Abd
Extend hip
Innervation: L5, S1 direct branches from sacral plexus
Give the name, origin, insertion, action and innervation of the muscle indicated
Obturator Internus
Origin: Inner surface obturator membrane
Insertion: Greater trochanter
(med surface)
Action: ER hip
Add hip < 30 Abd
Abd hip > 30 Abd
Extend hip
Innervation: L5, S1 direct branches from sacral plexus
Give the name, origin, insertion, action and innervation of the muscle indicated
Gemellus Inferior
Origin: Ischial tuberosity
Insertion: Greater trochanter
Action: ER hip
Add hip < 30 Abd
Abd hip > 30 Abd
Extend hip
Innervation: L5, S1 direct branches from sacral plexus
Give the name, origin, insertion, action and innervation of the muscle indicated
Obturator Externus
Origin: Outer surface obturator membrane
Insertion: Trochanteric fossa ER hip
Action: Add hip
Innervation: Obturator nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Quadratus Femoris
Origin: Ischial tuberosity
Insertion: Intertrochanteric crest
Action: ER hip
Add hip
Innervation: L5, S1 direct branches from sacral plexus
Give the name, origin, insertion, action and innervation of the muscle indicated
Pectineus
Origin: Superior pubic ramus
Insertion: Pectineal line
Action: Add hip
IR hip
Flex hip
Innervation: Femoral nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Adductor Longus
Origin: Pubic Body
Insertion: Linea aspera
Action: Add hip
Flex hip (to 70 deg)
IR hip
Innervation: Obturator nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Adductor Brevis
Origin: Inferior pubic ramus
Insertion: Linea aspera
Action: Add hip
Flex hip
IR hip
Innervation: Obturator nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Adductor Magnus
(Anterior)
Origin: Inferior pubic ramus
Ischial ramus
Insertion: Linea aspera
Action: Add hip
Ant: IR hip
Ant: Flex hip
Innervation: Obturator nerve
Adductor Magnus
(Posterior)
Origin: Ischial ramus
Ischial tuberosity
Insertion: Adductor tubercle femur
Add hip
Action:
Post: ER hip
Post: Ext hip
Innervation: Tibial nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Gracilis
Origin: Inferior pubic ramus
Insertion: Med to the Tibial Tuberosity via Pes Anserinus
Action: Add hip
Flex hip
Flex knee
IR tibia
Innervation: Obturator nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Rectus Femoris
Origin: AIIS &
Acetabular roof
Insertion: Tibial tuberosity
via patellar ligament
Action: Flex hip
Ext knee
Innervation: Femoral nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Vastus medialis
Origin: Linea aspera: med lip
Insertion: Tibial tuberosity
via patellar ligament
Action: Ext knee
Innervation: Femoral nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Vastus lateralis
Origin: Linea aspera: lat lip
Insertion: Tibial tuberosity
via patellar ligament
Action: Ext knee
Innervation: Femoral nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Vastus intermedius
Origin: Ant femur
Insertion: Tibial tuberosity
via patellar ligament
Action: Ext knee
Innervation: Femoral nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Biceps Femoris (Long head)
Origin: Ischial tub,
Insertion: Head of fibula
Action: Ext hip
Flex knee, ER tibia
Innervation: Tibial nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Biceps Femoris
(Short head)
Origin: Linea aspera
Insertion: Head of fibula
Action: Flex knee
ER tibia
Innervation: Common fibular nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Semimembranosus
Origin: Ischial tuberosity
Insertion: Med tibial condyle
Action: Ext hip
Flex knee
IR tibia
Innervation: Tibial nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Semitendinosus
Origin: Ischial tuberosity
Insertion: Med to the Tibial Tuberosity via Pes Anserinus
Action: Ext hip
Flex knee
Innervation: IR tibia Tibial nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Popliteus
Origin: Lat femoral condyle
Insertion: Post tibial surface
Action: Flex knee
IR tibia
ER femur
Innervation: Tibial nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Tibialis Anterior
Origin: Lat tibia
Insertion: Med cuneiform
Action: DF ankle
Invert IT
Innervation: Deep fibular nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Extensor digitorum longus
Origin: Ant fibula
Insertion: Base of middle
& distal phalanges 2-5
Action: DF ankle
Evert IT
Ext MTP/IP 2-5
Innervation: Deep fibular nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Extensor hallicus longus
Origin: Med fibula
Insertion: Base 1st distal phalanx
Action: DF ankle
Evert/Invert IT (STJ)
Ext MTP/IP 1
Innervation: Deep fibular nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Fibularis (peroneus) longus
Origin: Prox 2/3 lat fibula
Insertion: Med cuneiform
**Action**: PF ankle Evert IT (STJ)
Innervation: Superficial fibular nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Fibularis (peroneus) brevis
Origin: Distal 1/2 lat fibula
Insertion: Base 5th MT
Action: PF ankle, Evert IT (STJ)
Innervation: Superficial fibular nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Fibularis (peroneus) tertius
Origin: Distal ant fibula
Insertion: Base of 5th MT
Action: DF ankle, Evert IT (STJ)
Innervation: Deep fibular nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Soleus
Origin: Soleal line tibia
Insertion: Calcaneal tuberosity
via Achilles tendon
**Action**: PF ankle Invert IT (STJ)
Innervation: Tibial nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Gastrocnemius
Origin: Med epicondyle femur, Lat epicondyle femur
Insertion: Calcaneal tuberosity
via Achilles tendon
Actions: PF ankle
Invert IT (STJ)
Flex knee
Innervation: Tibial nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Plantaris
Origin: Lat epicondyle femur
Insertion: Calcaneal tuberosity
via Achilles tendon
Action: Small Contributor
PF ankle
Invert IT (STJ)
Flex knee
Innervation: Tibial nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Tibialis post
Origin: Post Tibia
IO membrane
Post Fibula
Insertion: Navicular (tuberosity)
Med cuneiform
**Action**: PF ankle Invert IT (STJ)
Innervation: Tibial nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Flexor digitorum longus
Origin: Post tibia
Insertion: Base distal phalanges 2-5
Action: PF ankle
Inv IT (STJ)
Flex MTP
Flex IP 2-5
Innervation: Tibial nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Flexor hallucis longus
Origin: Post fibula
Insertion: Base distal phalanx 1
Action: PF ankle
Inv IT (STJ)
Flex MTP 1
Flex IP 1
Innervation: Tibial nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Extensor digitorum brevis
Origin: Dorsal surface calcaneus
Insertion: Base middle phalange 2-4
Action: Ext MTP 2-4
Ext PIP 2-4
Innervation: Deep fibular nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Extensor hallucis brevis
Origin: Dorsal surface calcaneus
Insertion: Base prox phalanx 1
Action: Ext MTP 1
Innervation: Deep fibular nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Abductor hallucis
Origin: Med calcaneal tuberosity
Insertion:Base prox phalanx 1
Action: Abd MTP 1
Innervation: Med plantar nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Flexor hallucis brevis (medial head)
Origin: Med cuneiform
Insertion: Base prox phalanx 1
Action: Flex MPT 1
Innervation: Med plantar nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Flexor hallucis brevis (lat head)
Origin: Intermediate cuneiform
Insertion: Base prox phalanx 1
Action: Flex MPT 1
Innervation: Lat plantar nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Adductor hallucis (oblique head)
Origin: Base MTs 2-4
Insertion: Base prox phalanx 1
Action: Add MTP 1
Flex MTP 1
Innervation: Lat plantar nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Adductor hallucis
(transverse head)
Origin: Deep transverse MT lig
Insertion: Base prox phalanx 1
Action: Add MTP 1
Innervation: Lat plantar nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Abductor digiti minimi
Origin: Lat calcaneal tuberosity
Insertion: Base prox phalanx 5
Action: Abd MTP 5
Innervation: Lat plantar nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Flexor digiti minimi (brevis)
Origin: Base MT 5
Insertion: Base prox phalanx 5
Action: Flex MTP 5
Innervation: Lat plantar nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Flexor digitorum brevis
Origin: Calcaneal tuberosity
Insertion: middle phalanges 2-5
Action: Flex MTP 2-5
Flex PIP 2-5
Innervation: Med plantar nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Quadratus plantae
Origin: Calcaneal tuberosity
Insertion: Lat border FDL tendon
Action: Redirects and augments pull of FDL
Innervation: Lat plantar nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Lumbricals (1-4)
Origin: Med border FDL tendons
Insertion: Dorsal aponeuroses 2-5
Action: Flex MTP 2-5
Ext IP 2-5
Add MTP 2-5
Innervation: 1st Lumbrical:
Med plantar nerve
Lumbricals 2-4:
Lat plantar nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Plantar interossei (1-3)
Origin: Med border MT 3-5 Med
Insertion: base prox phalanx 3-5
Action: Add MT 3-5
Innervation: Lat plantar nerve
Give the name, origin, insertion, action and innervation of the muscle indicated
Dorsal interossei (1-4)
Origin: Two heads from opposing sides MT 1-5
Insertion:
First interosseus:
Med base prox phalanx 2
2-4 interossei:
Lat base prox phalanges 2-4
Action: Abd MTP 2-4
Innervation: Lat plantar nerve
