Muscles of the lower leg (Anterior/Posterior) Flashcards
Soleus (Origin & Insertion)
O: Soleal line & sup fibula
I: Calcaneal tuberosity via tendo calcaneus
Soleus (Actions)
Prime mover for plantarflexing the ankle
Soleus (Nerve & Artery)
N: Tibial N
A: Post tibial A
Plantaris (Origin & Insertion)
O: Inf lat supracondylar line
I: Calcaneal tuberosity
Plantaris (Actions)
Plantarflexes ankle
Flexes knee
Plantaris (Nerve & Artery)
N: Tibial N
A: Post tibial A
Popliteus (Origin & Insertion)
O: Lat femoral epicondyle
I: popliteal line
Popliteus (Actions)
Flexes & internally rotates knee
I/O lat rotates knee & retracts lat meniscus
Popliteus (Nerve & Artery)
N: Tibial N
A: Post tibial A
Gastrocnemius (Origin & Insertion)
O: Post med & lat femoral condyles
I: Calcaneal tuberosity via tendo calcaneus
Gastrocnemius (Actions)
Prime mover for plantarflexing ankle
I/O flexes knee
Gastrocnemius (Nerve & Artery)
N: Tibial N
A: Post tibial A
Flexor Digitorum Longus (Origin & Insertion)
O: Middle post tibia
I: Through med malleolus sulcus to distal phalanges of dig II-V
Flexor Digitorum Longus (Actions)
Prime mover for flexing dig II-V
Plantarflexes ankle
Inverts pes
Flexor Digitorum Longus (Nerve & Artery)
N: tibial N
A: Post tibial A
Tibialis Posterior (Origin & Insertion)
O: Lat to soleal line from lat tibia to med fibula
I: Through med malleolus sulcus to plantar instep
Tibialis Posterior (Actions)
Prime mover for inverting pes
Plantarflexes ankle
Tibialis Posterior (Nerve & Artery)
N: Tibial N
A: Post tibial A
Flexor Hallucis Longus (Origin & Insertion)
O: Post fibular diaphysis
I: Through sustentaculum tali sulcus to distal hallucal phalanx
Flexor Hallucis Longus (Actions)
Flexes hallux
Plantarflexes ankle
Inverts pes
Flexor Hallucis Longus (Nerve & Artery)
N: Tibial N
A: Post tibial A
Tibialis Anterior (Origin & Insertion)
O: Ant border, lat tibia, & interosseus membrane
I: Bottom of the instep
Tibialis Anterior (Actions)
Prime mover for dorsiflexing the ankle
Inverts pes
Tibialis Anterior (Nerve & Artery)
N: Deep fibular N
A: Ant tibial A
Extensor Hallucis Longus (Origin & Insertion)
O: Middle ant fibula & interosseus membrane
I: Distal phalanx of hallux
Extensor Hallucis Longus (Actions)
Extends hallux
Dorsiflexes ankle
Inverts pes
Extensor Hallucis Longus (Nerve & Artery)
N: Deep fibular N
A: Ant tibial A
Extensor Digitorum Longus (Origin & Insertion)
O: Sup ant fibula & interosseus membrane
I: Extensor expansions of dig II-V
Extensor Digitorum Longus (Actions)
Prime mover for extending dig II-V
Dorsiflexes ankle
Everts pes
Extensor Digitorum Longus (Nerve & Artery)
N: Deep fibular N
A: Ant tibial A
Fibularis Tertius (Origin & Insertion)
O: Inf portion of extensor digitorum longus
I: Mt. V tuberosity
Fibularis Tertius (Actions)
Everts pes
Dorsiflexes the ankle
Fibularis Tertius (Nerve & Artery)
N: Deep fibular N
A: Ant tibial A
Fibularis Longus (Origin & Insertion)
O: Fibular head & sup lat diaphysis
I: Through lat malleolus sulcus & calcaneal sulcus & then across the plantar region to Mt. I base
Fibularis Longus (Actions)
Plantarflexes the ankle
Everts the pes
Fibularis Longus (Nerve & Artery)
N: Superf fibular N
A: Fibular A
Fibularis Brevis (Origin & Insertion)
O: Inf lat fibular diaphysis
I: Through lat malleolus sulcus & calcaneal sulcus to Mt. V tuberosity
Fibularis Brevis (Actions)
Plantarflexes the ankle
Everts the pes
Fibularis Brevis (Nerve & Artery)
N: Superf fibular N
A: Fibular A