Rectus Femoris The only quadricep muscle that also flexes hip Semitendinosus Sciatic L4,5,S1,2 Fibularis Brevis Originates at the distal two-thirds of lateral fibula Semimembranosus The wider, and deeper muscle of the hamstring group Dorsal Interossei Abduct 2nd- 4th toes and Flex 2nd-4th toes Flexor Hallucis Longus Inserts on distal phalanx of first toe Abductor Hallucis Insert at proximal phalanx of first toe and medial sesamoid bone Gastrocnemius Has two heads and cross two joints (the knee and ankle) Flexor Digitorum Brevis The center muscle of the dorsal surface of the foot Biceps Femoris Long head: Sciatic L5, S1,2,3; Short head: Sciatic L5, S1,2 Plantar Interossei Adducts 3rd-5th toes and flexes 3rd-5th toes Quadratus Plantae Inserts on posterior, lateral aspect of flexor digitorum longus tendon Lumbricals of the foot First: Tibial L4,5, S1; Second through fourth: Tibial L(4), (5), S1,2 Plantaris Tibial L4, 5, S1, (2) Extensor Digitorum Brevis Extends the second through fourth toes Vastus Medialis Forms “teardrop” shape at distal portion of medial thigh Flexor Hallucis Brevis Flex the first toe Tibialis Posterior The only muscle in the flexors of the ankle and toes group that does not flex Soleus Only plantar flexes the ankle Popliteus Inserts on proximal, posterior aspect of tibia Tibialis Anterior Inserts at medial cuneiform and base of the first metatarsal Tensor Fasciae Latae Superior gluteal L4, 5, S1 Fibularis Longus Inserts at the base of the first metatarsal and medial cuneiform Extensor Hallucis Longus Inserts on distal phalanx of first toe Gracilis Obturator L2,3,4 Adductor Hallucis Adduct the first toe, assist to maintain transverse arch of foot, and assist to flex the first toe Abductor Digiti Minimi Originates on lateral process of calcaneus and plantar aponeurosis Extensor Digitorum Longus Originates at the lateral condyle of tibia; proximal, anterior shaft of fibula, and interosseous membrane Flexor Digiti Minimi Brevis Originate on Base of fifth metatarsal Vastus Intermedius Originates at the anterior and lateral shaft of the femur Vastus Lateralis Femoral L2,3,4 Flexor Digitorum Longus Originates on the middle, posterior surface of tibia Sartorius The longest muscle in the body Extensor Hallucis Brevis Extend the first toe Rectus Femoris The only quadricep muscle that also flexes hip Semitendinosus Sciatic L4,5,S1,2 Fibularis Brevis Originates at the distal two-thirds of lateral fibula Semimembranosus The wider, and deeper muscle of the hamstring group Dorsal Interossei Abduct 2nd- 4th toes and Flex 2nd-4th toes Flexor Hallucis Longus Inserts on distal phalanx of first toe Abductor Hallucis Insert at proximal phalanx of first toe and medial sesamoid bone Gastrocnemius Has two heads and cross two joints (the knee and ankle) Flexor Digitorum Brevis The center muscle of the dorsal surface of the foot Biceps Femoris Long head: Sciatic L5, S1,2,3; Short head: Sciatic L5, S1,2 Plantar Interossei Adducts 3rd-5th toes and flexes 3rd-5th toes Quadratus Plantae Inserts on posterior, lateral aspect of flexor digitorum longus tendon Lumbricals of the foot First: Tibial L4,5, S1; Second through fourth: Tibial L(4), (5), S1,2 Plantaris Tibial L4, 5, S1, (2) Extensor Digitorum Brevis Extends the second through fourth toes Vastus Medialis Forms “teardrop” shape at distal portion of medial thigh Flexor Hallucis Brevis Flex the first toe Tibialis Posterior The only muscle in the flexors of the ankle and toes group that does not flex Soleus Only plantar flexes the ankle Popliteus Inserts on proximal, posterior aspect of tibia Tibialis Anterior Inserts at medial cuneiform and base of the first metatarsal Tensor Fasciae Latae Superior gluteal L4, 5, S1 Fibularis Longus Inserts at the base of the first metatarsal and medial cuneiform Extensor Hallucis Longus Inserts on distal phalanx of first toe Gracilis Obturator L2,3,4 Adductor Hallucis Adduct the first toe, assist to maintain transverse arch of foot, and assist to flex the first toe Abductor Digiti Minimi Originates on lateral process of calcaneus and plantar aponeurosis Extensor Digitorum Longus Originates at the lateral condyle of tibia; proximal, anterior shaft of fibula, and interosseous membrane Flexor Digiti Minimi Brevis Originate on Base of fifth metatarsal Vastus Intermedius Originates at the anterior and lateral shaft of the femur Vastus Lateralis Femoral L2,3,4 Flexor Digitorum Longus Originates on the middle, posterior surface of tibia Sartorius The longest muscle in the body Extensor Hallucis Brevis Extend the first toe
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M-The only quadricep muscle that also flexes hip
N-Sciatic L4,5,S1,2
O-Originates at the distal two-thirds of lateral fibula
M-The wider, and deeper muscle of the hamstring group
A-Abduct 2nd-4th toes and Flex 2nd-4th toes
I-Inserts on distal phalanx of first toe
I-Insert at proximal phalanx of first toe and medial sesamoid bone
M-Has two heads and cross two joints (the knee and ankle)
M-The center muscle of the dorsal surface of the foot
N-Long head: Sciatic L5, S1,2,3; Short head: Sciatic L5, S1,2
A-Adducts 3rd-5th toes and flexes 3rd-5th toes
I-Inserts on posterior, lateral aspect of flexor digitorum longus tendon
N-First: Tibial L4,5, S1; Second through fourth: Tibial L(4), (5), S1,2
N-Tibial L4, 5, S1, (2)
A-Extends the second through fourth toes
M-Forms “teardrop” shape at distal portion of medial thigh
A- Flex the first toe
M-The only muscle in the flexors of the ankle and toes group that does not flex
A-Only plantar flexes the ankle
I-Inserts on proximal, posterior aspect of tibia
I-Inserts at medial cuneiform and base of the first metatarsal
N-Superior gluteal L4, 5, S1
I-Inserts at the base of the first metatarsal and medial cuneiform
I-Inserts on distal phalanx of first toe
N-Obturator L2,3,4
A- Adduct the first toe, assist to maintain transverse arch of foot, and assist to flex the first toe
O-Originates on lateral process of calcaneus and plantar aponeurosis
O-Originates at the lateral condyle of tibia; proximal, anterior shaft of fibula, and interosseous membrane
O-Originate on Base of fifth metatarsal
O-Originates at the anterior and lateral shaft of the femur
N-Femoral L2,3,4
O-Originates on the middle, posterior surface of tibia
M-The longest muscle in the body
A-Extend the first toe
