Leg, Ankle, and Foot Muscle Actions + Innervations Flashcards
tibialis anterior innervation
deep fibular nerve
tibialis anterior action
dorsiflexion
inversion
fibularis tertius innervation
deep fibular nerve
fibularis tertius action
dorsiflexion
eversion
extensor digitorum longus innervation
deep fibular nerve
extensor digitorum longus action
extension of digits 2-5
dorsiflexion
extensor hallucis longus innervation
deep fibular nerve
extensor hallucis lonus action
big toe extension (hallux)
dorsiflexion
fibularis longus innervation
superficial fibular nerve
fibularis longus action
weak plantarflexion
eversion
fibularis brevis innervation
superficial fibular nerve
fibularis brevis action
weak plantarflexion
eversion
plantaris innervation
tibial nerve
plantaris action
weak plantarflexion
proprioception
soleus innervation
tibial nerve
soleus action
plantarflexion
gastrocnemius innervation (medial + lateral heads)
tibial nerve
gastrocnemius action (medial + lateral heads)
plantarflexion
leg flexion at knee
muscles that make up the triceps surae
soleus and gastrocnemius (medial + lateral heads)
popliteus innervation
tibial nerve
popliteus action
stabilizes knee joint (resists external rotation of tibia on femur)
unlocks knee joint (externally rotates femur on fixed tibia)
tibialis posterior innervation
tibial nerve
tibialis posterior action
plantarflexion
inversion
maintain medial longitudinal arch
flexor hallucis longus innervation
tibial nerve
flexor hallucis longus action
big toe flexion (hallux)
weak plantarflexion
maintain medial longitudinal arch
flexor digitorum longus innervation
tibial nerve
flexor digitorum longus action
digit 2-5 flexion
plantarflexion
support medial longitudinal arch of foot
extensor hallucis brevis innervation
deep fibular nerve
extensor hallucis brevis action
big toe extension (hallux)
extensor digitorum brevis innervation
deep fibular nerve
extensor digitorum brevis action
digit 2-4 extension
abductor digiti minimi innervation
lateral plantar nerve
abductor digiti minimi action
digit 5 flexion + abduction
flexor digitorum brevis innervation
medial plantar nerve
flexor digitorum brevis action
digit 2-5 flexion
abductor hallucis innervation
medial plantar nerve
abductor hallucis action
big toe flexion + abduction
lumbrical 1 innervation
medial plantar nerve
lumbrical 1 action
MTP joint flexion
proximal + distal IP joint extension
lumbricals 2-4 innervation
lateral plantar nerve
lumbricals 2-4 action
MTP joint flexion
proximal + distal IP joint extension
quadratus plantae innervation
lateral plantar nerve
quadratus plantae action
assists flexor digitorum to flex digits 2-5
adductor hallucis innervation (transverse + oblique heads) DEEP BRANCH
lateral plantar nerve
adductor hallucis action (transverse + oblique heads) DEEP BRANCH
digit 1 adduction
flexor hallucis brevis innervation
medial plantar nerve
flexor hallucis brevis action
flexes digit 1 MTP joint
flexor digiti minimi brevis innervation SUPERFICIAL BRANCH
lateral plantar nerve
flexor digiti minimi brevis action SUPERFICIAL BRANCH
flexes digit 5 MTP joint
dorsal interossei innervation
lateral plantar nerve
dorsal interossei action
digit 2-4 MTP joint flexion
digit 2-4 adduction
digit 2-4 IP extension
DAB
palmar interossei innervation
lateral plantar nerve
palmar interossei action
digit 3-5 MTP flexion
digit 3-5 adduction
digit 3-5 IP extension
PAD