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Leg Muscles

origin/insertions

QuestionAnswer
dorsiflexion standing on the heels
plantar flexion standing on the toes
inversion turning the foot inward so that the plantar surface faces medially
eversion turning the foot so that the plantar surface of the foot faces laterally
ANTERIOR MUSCLE: What is the origin and insertion of the tibialis anterior? Origin: lateral epicondyle of the tibia. Insertion:medial cuniform and 1st metatarsal
ANTERIOR MUSCLE: What are the actions of the tibialis anterior? dorsiflexes the foot and inverts the foot
ANTERIOR MUSCLE: What is the nerve of the tibialis anterior? deep fibular nerve
ANTERIOR MUSCLE: What is the origin and insertion of the extensor hallicus longus? Origin: tibia and interosseus membrane. Insertion: big toe
ANTERIOR MUSCLE: What are the actions of the extensor hallicus longus? extends the big toe and dorsiflex foot
ANTERIOR MUSCLE: What is the nerve of the extensor hallicus longus? deep fibular nerve
ANTERIOR MUSCLE: What is the origin and insertion of the extensor digitorium longus? Origin: tibia, interosseus membrane, and fibula. Insertion: four lateral toes.
ANTERIOR MUSCLE: What are the actions of the extensor hallicus longus? extend toes and dorsiflex foot
ANTERIOR MUSCLES: What are the major actions and typical nerve? Major actions are dorsiflexion of the foot and/or flexion of the toes. Major nerve is the Deep Fibular Nerve.
LATERAL COMPARTMENT MUSCLES: What are the major actions and the typical nerve? Major actions are plantar flex and evert the foot. Innervated by the Superficial Fibular Nerve
LATERAL COMPARTMENT MUSCLES: What is the origin and insertion of the fibularis longus? Origin: Fibula. Insertion: 1st metatarsal and medial cuniform (on SOLE of the foot)
LATERAL COMPARTMENT MUSCLES: What are the actions of the fibularis longus? plantar flexes foot and eversion of the foot
LATERAL COMPARTMENT MUSCLES: What is the nerve of the fibularis longus? Superficial Fibular Nerve
LATERAL COMPARTMENT MUSCLES: What is the origin and insertion of the fibularis brevis? Origin: fibula. Insertion: 5th metatarsal.
LATERAL COMPARTMENT MUSCLES: What are the actions of the fibularis brevis? plantar flexes foot and eversion of the foot
LATERAL COMPARTMENT MUSCLES: What is the nerve of the fibularis brevis? Superficial Fibular Nerve
POSTERIOR COMPARTMENT MUSCLES: What are the major actions and the nerve that innervates them? Will either do one of two things (or both): plantar flexion of the foot or flex toes. Innervated by the Tibia Nerve.
POSTERIOR COMPARTMENT MUSCLES: What are the origins of the medial head of the Gastrocnemius? Medial head: corresponding condyle of the femur and medial part of the capsule of the knee.
POSTERIOR COMPARTMENT MUSCLES: What are the origins of the lateral head of the Gastrocnemius? Lateral head: lateral condyle of femur and lateral part of the capsule of the knee.
POSTERIOR COMPARTMENT MUSCLES: What is the insertion of the medial and lateral heads of the Gastrocnemius? Calcaneous.
POSTERIOR COMPARTMENT MUSCLES: What are the actions of the Gastrocnemius? flex leg (not very well) and plantar flex foot
POSTERIOR COMPARTMENT MUSCLES: What is the nerve of the Gastrocnemius? Tibial Nerve
POSTERIOR COMPARTMENT MUSCLES: What are the origins and insertion of the soleus? Origin: femur, tibia, and fibula. Insertion: Calcaneous.
POSTERIOR COMPARTMENT MUSCLES: What is the action of the Soleus? plantar flex the foot
POSTERIOR COMPARTMENT MUSCLES: What is the nerve of the Soleus? Tibial Nerve
POSTERIOR COMPARTMENT MUSCLES: What are the characteristics of the Plantaris? It's very small; rapidly contracts; big if you jump; used in reconstructive surgery of the hand
POSTERIOR COMPARTMENT MUSCLES: What is the origin and insertion of the plantaris? Origin: femur. Insertion: calcaneous (via a very long tendon).
POSTERIOR COMPARTMENT MUSCLES: What are the actions of the Plantaris? plantar flex the foot and helps flex the leg at the knee
POSTERIOR COMPARTMENT MUSCLES: What is the nerve of the Plantaris? Tibial Nerve
DEEP GROUP: What are the origins and insertion of the popliteus? Origin: lateral condyle of the knee, lateral condyle of the femur, and lateral meniscus of the knee joint. Insertion: tibia
DEEP GROUP: What are the actions of the Popliteus? medial rotation of the leg and helps flex the knee
DEEP GROUP: What is the nerve of the Popliteus? Tibial nerve
DEEP GROUP: What are the origins and insertion of the Flexor hallicus longus? Origin: fibula and interosseus membrane. Insertion: big toe (**only post muscle that inserts onto the toe**)
DEEP GROUP: What are the actions of the Flexor hallicus longus? flex big toe and helps plantar flex the foot
DEEP GROUP: What is the nerve of the Flexor hallicus longus? Tibial nerve
DEEP GROUP: What are the origins and insertions of the Tibialis Posterior? Origins: tibia, fibula, and interosseus membrane. Insertions: navicular, cuboid, all 3 cuniforms, metatarsals 2-4.
DEEP GROUP: What are the actions of the Tibialis Posterior? plantar flex foot and MAJOR inverter of the foot
DEEP GROUP: What is the nerve of the Tibialis Posterior? Tibial nerve
DEEP GROUP: What are the origins and insertion of the Flexor digitorum longus? Origin: tibia, fibula, and interosseus membrane. Insertion: metatarsals of toes 2-5
DEEP GROUP: What are the actions of the flexor digitorium longus? helps flex toes and helps plantar flex the foot
DEEP GROUP: What are the actions of the flexor digitorium longus? Tibial Nerve
Created by: amandatucker10
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