Muscles: Leg, Foot Flashcards
Name the muscle, origin, and insertion
Gastrocnemius
Origin: Condyles of the femur, posterior surfaces
Insertion: Calcaneus via calcaneal tendon
Name the muscle and its actions
Gastrocnemius
Actions:
Flex the knee (TF jt)
Plantar flex the ankle (talocural jt)
Name the muscle, origin, and insertion
Soleus
Origin: Soleal line; proximal, posterior surface of tibia and posterior aspect of head of fibula
Insertion: Calcaneus via calcaneal tendon
Name the muscle and its actions
Soleus
Actions:
Plantar flex the ankle (talocural jt)
Name the muscle, origin, and insertion
Plantaris
Origin: Lateral supracondylar line of femur
Insertion: Calcaneus via calcaneal tendon
Name the muscle and its actions
Plantaris
Actions:
Weak plantar flexion of the ankle (talocural jt)
Weak flexion of the knee (TF jt)
Name the muscle, origin, and insertion
Popliteus
Origin: Lateral condyle of the femur
Insertion: Proximal, posterior aspect of tibia
Name the muscle and its actions
Popliteus
Actions:
Medially rotate the flexed knee (TF jt)
Flex the knee (TF jt)
Name the muscle in green, origin, and insertion
Peroneus Longus
Origin: Head of fibula and proximal 2/3rds of lateral fibula
Insertion: Base of the first metatarsal and medial cuneiform
Name the muscle in blue, origin, and insertion
Peroneus Brevis
Origin: Distal 2/3rds of lateral fibula
Insertion: Tuberosity of 5th metatarsal
Name the muscles and their actions
Peroneus Longus (green) and Brevis (blue)
Actions:
Evert the foot
Assist to plantar flex the ankle (talocural jt)
Name the muscle, origin, and insertion
Tibialis Anterior
Origin: Lateral condyle of tibia; proximal lateral surface of tibia and interosseous membrane
Insertion: Medial cuneiform and base of the 1st metatarsal
Name the muscle and its actions
Tibialis Anterior
Actions:
Invert the foot
Dorsiflex the ankle (talocural jt)
Name the muscle, origin, and insertion
Extensor hallucis longus
Origin: Middle anterior surface of fibula and interosseous membrane
Insertion: Distal phalanx of first toe
Name the muscle and its actions
Extensor Hallucis Longus
Actions:
Extend the first toe (metatarsophalangeal and interphalangeal jts)
Dorsiflex the ankle (talocural jt)
Invert the foot
Name the muscle, origin, and insertion
Extensor Digitorum Longus
Origin: Lateral condyle of tibia; proximal anterior shaft of fibula and interosseous membrane
Insertion: Middle and distal phalanges of 2nd through 5th toes
Name the muscle and its actions
Extensor Digitorum Longus
Actions:
Extend the 2nd through 5th toes (metatarsophalangeal and interphalangeal)
Dorsiflex the ankle (talocural jt)
Evert the foot
Name the muscle, origin, and insertion
Tibialis Posterior
Origin: Proximal posterior shafts of tibia and fibula; and interosseous membrane
Insertion: All five tarsal bones and bases of 2nd through 4th metatarsals
Name the muscle and its actions
Tibialis Posterior
Actions:
Invert the foot
Plantar flex the ankle (talocrural jt)
Name the muscle, origin, and insertion
Flexor Digitorum Longus
Origin: Middle posterior surface of tibia
Insertion: Distal phalanges of 2nd through 5th toes
Name the muscle and its actions
Flexor Digitorum Longus
Actions:
Flex the 2nd through 5th toes (metatarsophalangeal and interphalangeal jt)
Weak plantar flexion of ankle (talocrural jt)
Invert the foot
Name the muscle, origin, and insertion
Flexor Hallucis Longus
Origin: Middle half of posterior fibula
Insertion: Distal phalanx of 1st toe
Name the muscle and its actions
Flexor Hallucis Longus
Actions:
Flex the first toe (metatarsophalangeal and interphalangeal jts)
Weak plantar flexion of ankle (talocrural jt)
Invert the foot
