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Exam 2: Muscle Cards

Leg, Foot

QuestionAnswer
Tibialis Anterior Proximal Attachment Lateral condyle of tibia, superior 2/3 of lateral surface of tibia, fascia, interosseus membrane, intermuscular septum
Nerve that innervates Tibialis Anterioer Deep Fibular Nerve (L4,5,S1)
Actions of the Tibialis Anterior Dorsiflexes and Inverts at ankle; Decelerates foot in gait between heel strike and flat foot
Extensor Digitorum Longus: Proximal Attachment Lateral condyle of tibia, superior 3/4 of anterior surface of fibula, fascia, interosseus membrane, and intermuscular septum
Nerve that innervates Extensor Digitorum Longus Deep Fibular Nerve (L4,5,S1)
Actions of Extensor Digitorum Longus Extends lateral 4 digits and dorsiflexes foot
Extensor Hallucis Longus: Proximal Attachment Middle part of anterior surface of fibula, fascia, interosseus membrane, intermuscular septum
Nerve that innervates the Extensor Hallucis Longus Deep Fibular Nerve (L4,5,S1)
Actions of the Extensor Hallucis Longus Extends the great toe and dorsiflexes foot
Fibularis Tertius: Proximal Attachment Inferior 1/3 of anterior surface of fibula, fascia, and interoseus membrane
Nerve that innervates Fibularis Tertius Deep Fibular Nerve: (L4,5,S1)
Actions of the Fibularis Tertius Dorsiflexes foot and aids in eversion of foot
Fibularis Longus: Proximal Attachment Head and superior 2/3 of lateral surface of fibula, fascia, intermuscular septum, few fibers from laterl condyle
Nerve that innercates the Fibularis Longus Superficial fibular nerve (L5,S1,2)
Actions of the Fibularis Longus NWB: everts foot and weakly plantarflexes; depresses 1st metatarsal WB: plantar flexes foot and supports arches; limits inversion
Fibularis Brevis: Proximal Attachment Inferior 2/3 of lateral surface of fibula, fascia, intermuscular septum
Nerve that innervates Fibularis Brevis Superficial fibular nerve (L5,S1,2)
Actions of the fibularis brevis aids eversion, limits inversion, weakly plantarflexes foot
Gastrocnemius: proximal attachment Lateral head: lateral aspect of lateral femoral condyle (superior to LCL att, lateral supracondylar line, and knee joint capsule) Medial head: popliteal of femur (superior to medial condyle and knee joint capsule)
Gastrocnemius: distal attachment Posterior surface of calcaneous with calcaneal tendon
Nerve that innervates gastrocnemius Tibial nerve (L4-S3)
Action of gastrocnemius Plantarflexes foot; flexes knee joint (gastrocnemius has faster contraction than soleus so important in running/leaping)
Soleus: proximal attachment Posterior aspect of head of fibula; superior 1/4 of fibula; soleal line and medial border of tibia; fascia; fibrous arch btw tibia and fibula
Soleus: distal attachment Posterior surface of calcaneous with calcaneal tendon
Nerve that innervates the soleus Tibial nerve (L4-S3)
Action of the soleus Plantarflexes foot and steadies leg on foot
Plantaris: proximal attachment PA: Inferior end of lateral supracondylar line of femur and fascia; oblique popliteal ligament
Plantaris: distal attachment posterior surface of calceneus with calcaneal tendon
Nerve that innervates the plantaris Tibial nerve (L4-S3)
Actions of the plantaris Weakly assist in plantarflexion of foot; flexes knee joint
Popliteus: proximal attachment lateral surface of lateral condyle of femur and lateral meniscus; knee joint capsule
Popliteus: distal attachment posterior surface of tibia, superior to soleal line
nerve that innervates the popliteus tibial nerve (L4-S3)
Actions of the Popliteus weakly flexes knee with distal end fixed; unlocks knee by medial rotation when distal end free; retracts lateral meniscus during knee flexion; aids posterior stability of knee
Flexor Hallucis Longus: proximal attachment Inferior 2/3 of posterior surface of fibula and inferior part of interosseus membrane; fascia, intermuscular septum, and fascia of tibilais posterior
Flexor hallucis longus: distal attachment plantar surface of base of distal phalanx of great toe
nerve that innervates flexor hallucis longus tibial nerve (L4-S3)
Actions of flexor hallucis longus flexes great toe at all joints and plantarflexes foot; supports longitudinal arch of foot and maintains pads of toe on ground
Flexor digitorum longus: proximal attachment medial part of posterior surface of tibia, inferior to soleal line
Flexor digitorum longus: distal attachment bases of distal phalanges of lateral 4 digits
Nerve that innervates flexor digitorum longus tibial nerve (L4-S3)
Actions of flexor digitorum longus flexes lateral 4 digits and plantarflexes foot; supports longitudinal arch
Tibialis Posterior: proximal attachment Interosseus membrane, posterior surface of tibia inferior to soleal line, and posterior surface of fibula (also fascia and intermuscular septum)
Tibialis Posterior: distal attachment tuberosity of navicular, medial and intermediate cuneiforms, cuboid and bases of 2nd, 3rd, and 4th metatarsal bones; tendon of FHB
Nereve that innervates tibialis posterior tibial nerve (L4-S3)
Actions of tibialis posterior plantarflexes and INVERTS foot; controlls pronation
Tibialis Anterior Distal Attachment Medial and plantar surfaces of medial cuneiform and base of 1st metatarsal
Extensor Digitorum Longus Distal Attachment Middle and distal phalanges of lateral 4 digits
Extensor Hallucis Longus Distal Attachment Dorsal aspect of base of distal phlanx of great toes
Fibularis Tertius Distal Attachment Dorsum of base of 5th metatarsal
Fibularis Longus Distal Attachment Plantar surface of base of 1st metatarsal bone and medial cuneiform bone (Posterior to lateral malleolus crosses obliquely)
Fibularis Brevis Distal Attachment Dorsal surface of tuberosity on lateral side of base of 5th metatarsal. (posterior to fibularis tertius)
Created by: elvis82