Appendicular Muscles - Lower Limb Flashcards
(32 cards)
Tibialis anterior
Origin: lateral condyle & proximal shaft of tibia
Insertion: metatarsals
Action: dorsiflexion & inversion
Innervation: deep fibular nerve
Tibialis posterior
Origin: interosseus membrane & shafts of tibia and fibula
Insertion: metatarsals
Action: plantar flexion & inversion
Inneration: tibial branch of sciatic nerve
Gastrocnemius
Origin: femoral condyles
Insertion: calcaneus
Action: plantar flexion & flexion at knee
Innervation: tibial nerve
Soleus
Origin: head and shaft of fibula & shaft of tibia
Insertion: calcaneus
Action: plantar flexion
Innervation: tibial branch of sciatic nerve
Flexor digitorum longus
Action: flexion of joints of toes 2-5 & plantar flexion
Innervation: tibial branch
Flexor hallucis longus
Origin: flexion at joints of great toe & plantar flexion
Innervation: tibial branch
Extensor digitorum longus
Action: extension of toes 2-5 & dorsiflexion
Innervation: deep fibular nerve
Extensor hallucis longus
Action: extension at joints of great toe & dorsiflexion
Innervation: deep fibular nerve
Biceps femoris
Origin: ischial tuberosity & linea aspera
Insertion: head of fibula & lateral condyle of tibia
Action: flexion at knee & extension at hip
Innervation: sciatic nerve (tibial portion)
Semimembranosus
Origin: ischial tuberosity
Insertion: medial condyle of tibia
Action: flexion at knee & extension at hip
Innervation: sciatic nerve (tibial branch)
Semitendinosus
Origin: ischial tuberosity
Insertion: proximal and medial tibia
Action: flexion at knee & extension at hip
Innervation: sciatic nerve (tibial branch)
Sartorius
Origin: iliac spine
Insertion: tibia (near tibial tuberosity)
Action: flexion at knee & extension at hip
Innervation: femoral nerve
Popliteus
Origin: lateral condyle of femur
Insertion: tibial shaft
Action: medial rotation of tibia & flexion at knee
Innervation: tibial nerve
Rectus femoris
Origin: iliac spine & ilium
Insertion: tibial tuberosity
Action: extension at knee & flexion at hip
Innervation: femoral nerve
Vastus intermedius
Origin: anterolateral surface of femur & linea aspera
Insertion: tibial tuberosity
Action: extension at knee
Innervation: femoral nerve
Vastus lateralis
Origin: greater trochanter & linea aspera
Insertion: tibial tuberosity
Action: extension at knee
Innervation: femoral nerve
Vastus medialis
Origin: linea aspera
Insertion: tibial tuberosity
Action: extension at knee
Innervation: femoral nerve
Adductor brevis
Origin: ramus of pubis
Insertion: linea aspera
Action: medial rotator, adductor, & flexion
Insertion: obturator nerve
Adductor longis
Origin: ramus of pubis
Insertion: linea aspera
Action: medial rotator, adductor, & flexion
Innervation: obturator nerve
Adductor magnus
Origin: ramus of pubis
Insertion: linea aspera & adductor tubercle
Action: adductor & extension
Innervation: obturator nerve
Pectineus
Origin: ramus of pubis
Insertion: linea aspera
Action: adductor
Insertion: obturator nerve & femoral nerve
Gracilis
Origin: ramus of pubis
Insertion: tibia
Action: adductor
Insertion: obturator nerve
Iliacus
Origin: iliac fossa
Insertion: distal to lesser trochanter & tendon
Action: flexion
Innervation: femoral nerve
Psoas major
Origin: transverse processes of T12 to L5
Insertion: lesser trochanter
Action: flexion
Innervation: lumbar plexus
