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Exam 2: Muscle Cards
Leg, Foot
| Question | Answer |
|---|---|
| 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
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