Muscles of Lower Limbs function Flashcards
Psoas major
Location: anterior thigh
Action: flexor of the thigh; flexes the trunk (sitting up)
Group: Hip
psoas minor
Location: anterior thigh
Action: weak flexor of spinal cord
Group: Hip
Iliacus
Location: anterior thigh
Action: flexor of thigh: when femur is fixed, flexes the trunk as in sitting up
gluteus maximus
Location: posterior thigh
Action: abducts, extends, and laterally rotates the hip
Group: Glutes
gluteus medius
Location: posterior thigh
Action: abducts the thigh, stabilizes the hip. rotates thigh
Group: Glutes
Gluteus minius
Location: hip posterior region
Action: abduct the thigh, stabilizes the hip, rotates thigh
Group: Glutes
Tensor fasciae latae
Hint: balance a latte on hip
Location: lateral side of thigh
Action: tenses the fascia lata; abductor and internal rotator of thigh; stabilization of the hip and knee joints
Group: Glutes
Obturator externus
Location: tucked under hip joint
Action: externally rotates thigh and stabilizes the pelvis
Group: Thigh Lateral Rotators
Obturator internus
Location: inbetween superior and inferior gemellus
Action: laterally rotates thigh when extended; abducts thigh when flexed
Group: Lateral Rotators
Superior gemellus
Location: lateral, near hip joint
Action: external rotation, adduction, and extension of hip joint; acts as abductors when thigh is flexed
Group: Lateral Rotators
Inferior gemellus
Location: lateral, near hip joint
Action: external rotation, adduction, and extension of the hip joint; act as abductors when the thigh is flexed
Group: Lateral Rotators
Quadratus femoris
Location: inferior to the rest of the thigh lateral rotators
Action: external rotation and adduction of hip
Group: Lateral Rotators
Priformis
Location: lateral, near hip joint
Action: external rotation, abduction, extension of hip joint; aids in stabilization of the hip
Group: Lateral Rotators
pigeon pose
Thigh Lateral Rotators (Superior to Inferior)
Patch Goods Often Go on Quilts -> Piriformis, Gemullus Superior, Obturator Interus, Gemellus Inferior, Obturator Extermus, Quadraturis Femuris
Satorius
longest muscle in the body
Location: runs from front of pelvis to top of tibia
Action: hip flexion, external rotation and abduction
Sartor = tailor, tailor sit cross legged to test satorius
Vastus lateralis
Location: lateral thigh
Action: extension of leg at knee joint
Group: Quadriceps
Vastus Intermedialis
Location: inbetween Vastus lateralis and vastus medius
Action: extension of leg at knee joint
Group: Quadriceps
Vastus Medius
Location: most medial of quads in anterior region of thigh
Action: extension of leg at knee joint
Group: Quadriceps
Rectus Femoris
Loction: most anterior of quads
Action: extends knee and hip flexor
Group: Quadriceps
Biceps Femoris
Location: posterior region of thigh; most lateral of hamstrings
Action: flexs knee; rotates tibia outward (laterally)
Group: Hamstrings
Semitendinosus
Location: posterior region of thigh; medial of hamstrings
Action: flexes knee; rotates leg medially
Group: Hamstrings
thinner, tendon-looking
Semimembranosus
Location: posterior region of thigh; medial of hamstrings
Action: flexes knee; rotates leg medially
Group: Hamstrings
wider -> sprawling membrane
Adductor brevis
Loction: medial region of thigh
Action: adducts the thigh, rotates thigh medially
Group: Adductors
shortest of adductors
Adductor Longus
Location: medial region of thigh
Action: adduct thigh, rotates thigh medially
Group: Adductors
longest of adductors
Adductor Magneus
Location: big triangle-like muscle on medial region of thigh
Action: adduct thigh, rotates thigh medially
Group: Adductors
MLB
adductors - Magnus, Longus, Brevis
baseball players have nice thighs
Gracilis
Loctation: medial region of thigh, runs from pubis to tibia
Action: medially rotates thigh, thigh adductor, flexes knee
Group: adductor
long and thin, need to be graceful
Pectineus
Location: most superior of adductors, medial thigh region
Action: adducts, flexes, and externally (laterally) rotates
Group: adductors
close to “peaches” of butt
Tibial Anterior
Location: front of tibia to medial side of foot
Action: dorsiflexion and inversion of foot
Group: Lower Leg - Anterior
Extensor digitorum longus
Location: lateral region of tibia to distal phalanges
Action: extends digits of foot; dorsiflexes foot
Group: Lower Leg - Anterior
Extensor hallucis longus
Location: anterior surface of fibula to hallux
Action: extends big toe (hallux)
Group: Lower Leg - Anterior
Fibularis tertius
Location: distal part of tibia to metarasal of pinky toe
Action: dorsiflexes and everts ankle
Group: Lower Leg - Anterior
Fibularis longus
Location: lateral region of the distal surface fibia to metatarsal 5
Action: plantar flex and evert ankle
Group: Lateral Lower Leg
Fibularis brevis
Location: lateral region of the distal 2/3 of fibula to metatarsal 1 (pinky)
Action: planterflexes and everts ankle, supports foot arch
Group: Lateral lower leg
Gastrocnemius
Location: outmost muscle of posterior region of leg
Action: plantar flexon of foot, flexes leg at knee joint
Group: Posterior Lower Leg
belly of muscle -> gastro
Soleus
Location: posterior surface of fibular shaft to posterior side of calcaneus
Action: planter flexion of foot
Group: Posterior Lower Leg
Achilles tendon
- gastrocnemius and soleus join here to insert to heel (calcaneus)
Plantaris
Location: femur -> run along lateral side of calf -> posterior calcaneus
Action: plantarflex foot, flexes knee
Group: Posterior Lower Leg
Popliteus
Location: behind the knee
Action: unlocks knee
Group: Posterior Lower Leg
Tibialis Posterior
Location: posterior surface of tibia to foot
Action: plantar flexion of foot; inverts and adducts foot
Group Deep posterior lower leg
Flexor digitorum longus
good d make u curl your toes (sorry)
Location: posterior surface of tibia to foot
Action: curl toes, inversion and plantarflexion of foot
Group: Deep posterior lower leg
Flexor hallucis longus
Location: 2/3 thirds of posterior fibula to big toe
Action: curl big toe, inversion and plantarflexion of foot
Group: Deep Posterior Lower Leg
Deep Posterior Lower Leg muscles
Tom Dick Harry -> Tibialis posterior, flexor digitorum longus, flexor hallucis longus
Extensor digitorum brevis
Location: dorsal surface of foot
Action: extends digits
Group: Dorsal Foot
Extensor hallucis brevis
Location: dorsal portion of heel to dorsal surface of big toe
Action: extends hallux
Group: Dorsal Foot
Dorsal Interossei
Loction: inbetween metatarsal bones
Action: abduct metatarsals
Group: dorsal foot
Abductor hallucis
Location: Medial side of foot
Action: abducts hallux, supports foot arch
Group: Plantar foot
Abductor digiti minimi
Location: lateral side of foot
Action: abducts pinky
Group: Plantor foot
Flexor digitorium brevis
Location: underside of foot
Action: flexes digits
Group: Plantar Foot
Qudratus Plantae
Location: bottom of calcaneus to foot
Action: pull toes upward
Group: Deep Foot (Plantar Layer 2)
Lumbricals
Location: under side of foot
Action: flexes metatarsophalangeal joints
Group: Deep Foot (Planter Layer 2)
Flexor hallucis brevis
Location: cuneiform/cuboid bone to undersid of big toe
Acton: bends joint of big toe
Group: Deep Foot (Plantar Layer 3)
Flexor digiti minimi brevis
Location: metatarsal bone to pinky toe (underside)
Action: bends pinky toe
Group: Deep Foot (Plantar Layer 3)
Adductor hallucis
Location: triangle shaped muscle on underside of metatarsals
Action: adduct big toe, support foot arch
Group: Plantar foot
Opponens digiti minimi
Location: 5th metatarsal
Action: flexes pinky toe
Group: Plantar Layer 3
