Extensor Hallucis Brevis Inserts on the proximal phalanx of first toe. Semimembranosus Innervates the Sciatic (tibial branch) L4, 5, S1, 2 nerve. Lumbricals of the Foot The first innervates the Tibial L4, 5, S1 and the 2nd-4th innervates the Tibial L(4), (5), S1, 2 nerve. Vastus Medialis Forms a "teardrop" shape. Flexor Digiti Minimi Brevis Flexes the fifth toe. Tibialis Anterior Inverts the foot and dorsiflex the ankle. Vastus Lateralis Innervates the Femoral L2, 3, 4 nerve. Adductor Hallucis Innervates the Tibial S1, 2 nerve. Gracilis Innervates the Obturator L2, 3, 4 nerve. Tibialis Posterior Inserts on all five tarsal bones and bases of 2nd- 4th metatarsals. Semitendinosus Inserts on the proximal, medial shaft of the tibia at the pes anserinus tendon. Biceps Femoris Has 2 heads- a superficial long head and a deeper short head. Rectus Femoris The only quadriceps muscle to cross two joints. Gastrocnemius Flexes the knee and plantar flexes the ankle Plantar Interossei Inserts on the medial surfaces of proximal phalanges of 3rd-5th toes. Flexor Hallucis Longus Flexes the first toe, weak plantar flexion of ankle, and inverts the foot. Extensor Digitorum Longus Originates on the lateral condyle of tibia; proximal, anterior shaft of fibula; and interosseous membrane. Extensor Digitorum Brevis Originates on the dorsal surface of calcaneus. Fibularis Brevis Inserts at the tuberosity of the fifth metatarsal. Vastus Intermedius Originates on the anterior and lateral shaft of the femur. Plantaris This muscle has the longest tendon in the body. Extensor Hallucis Longus Extends the first toe, dorsiflex the ankle, and inverts the foot. Flexor Digitorum Longus Inserts on the distal phalanges of second through fifth toes. Abductor Hallucis Abducts the first toe, and assists to flex the first toe. Flexor Hallucis Brevis Innervates the Tibial L4, 5, S1 nerve. Quadratus Plantae Originates on the medial and lateral sides of plantar surface of calcaneus. Abductor Digiti Minimi Originates on the lateral process of calcaneus and plantar aponeurosis. Soleus Sometimes called the "second heart" because of its important role in its strong contractions returning blood from the leg to the heart. Tensor Fasciae Latae Innervates the Superior Gluteal L4, 5, S1 nerve. Popliteus Has the nickname "the key which unlocks the knee." Flexor Digitorum Brevis Inserts on the middle phalanges of second through fifth toes. Sartorius This is the longest muscle in the body. Dorsal Interossei Abducts the 2nd-4th toes, and flexes the 2nd-4th toes. Fibularis Longus Originates at the head of the fibula and proximal two- thirds of lateral fibula. Extensor Hallucis Brevis Inserts on the proximal phalanx of first toe. Semimembranosus Innervates the Sciatic (tibial branch) L4, 5, S1, 2 nerve. Lumbricals of the Foot The first innervates the Tibial L4, 5, S1 and the 2nd-4th innervates the Tibial L(4), (5), S1, 2 nerve. Vastus Medialis Forms a "teardrop" shape. Flexor Digiti Minimi Brevis Flexes the fifth toe. Tibialis Anterior Inverts the foot and dorsiflex the ankle. Vastus Lateralis Innervates the Femoral L2, 3, 4 nerve. Adductor Hallucis Innervates the Tibial S1, 2 nerve. Gracilis Innervates the Obturator L2, 3, 4 nerve. Tibialis Posterior Inserts on all five tarsal bones and bases of 2nd- 4th metatarsals. Semitendinosus Inserts on the proximal, medial shaft of the tibia at the pes anserinus tendon. Biceps Femoris Has 2 heads- a superficial long head and a deeper short head. Rectus Femoris The only quadriceps muscle to cross two joints. Gastrocnemius Flexes the knee and plantar flexes the ankle Plantar Interossei Inserts on the medial surfaces of proximal phalanges of 3rd-5th toes. Flexor Hallucis Longus Flexes the first toe, weak plantar flexion of ankle, and inverts the foot. Extensor Digitorum Longus Originates on the lateral condyle of tibia; proximal, anterior shaft of fibula; and interosseous membrane. Extensor Digitorum Brevis Originates on the dorsal surface of calcaneus. Fibularis Brevis Inserts at the tuberosity of the fifth metatarsal. Vastus Intermedius Originates on the anterior and lateral shaft of the femur. Plantaris This muscle has the longest tendon in the body. Extensor Hallucis Longus Extends the first toe, dorsiflex the ankle, and inverts the foot. Flexor Digitorum Longus Inserts on the distal phalanges of second through fifth toes. Abductor Hallucis Abducts the first toe, and assists to flex the first toe. Flexor Hallucis Brevis Innervates the Tibial L4, 5, S1 nerve. Quadratus Plantae Originates on the medial and lateral sides of plantar surface of calcaneus. Abductor Digiti Minimi Originates on the lateral process of calcaneus and plantar aponeurosis. Soleus Sometimes called the "second heart" because of its important role in its strong contractions returning blood from the leg to the heart. Tensor Fasciae Latae Innervates the Superior Gluteal L4, 5, S1 nerve. Popliteus Has the nickname "the key which unlocks the knee." Flexor Digitorum Brevis Inserts on the middle phalanges of second through fifth toes. Sartorius This is the longest muscle in the body. Dorsal Interossei Abducts the 2nd-4th toes, and flexes the 2nd-4th toes. Fibularis Longus Originates at the head of the fibula and proximal two- thirds of lateral fibula.
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I-Inserts on the proximal phalanx of first toe.
N-Innervates the Sciatic (tibial branch) L4, 5, S1, 2 nerve.
N-The first innervates the Tibial L4, 5, S1 and the 2nd-4th innervates the Tibial L(4), (5), S1, 2 nerve.
M-Forms a "teardrop" shape.
A-Flexes the fifth toe.
A-Inverts the foot and dorsiflex the ankle.
N-Innervates the Femoral L2, 3, 4 nerve.
N-Innervates the Tibial S1, 2 nerve.
N-Innervates the Obturator L2, 3, 4 nerve.
I-Inserts on all five tarsal bones and bases of 2nd-4th metatarsals.
I-Inserts on the proximal, medial shaft of the tibia at the pes anserinus tendon.
M-Has 2 heads- a superficial long head and a deeper short head.
M-The only quadriceps muscle to cross two joints.
A-Flexes the knee and plantar flexes the ankle
I-Inserts on the medial surfaces of proximal phalanges of 3rd-5th toes.
A-Flexes the first toe, weak plantar flexion of ankle, and inverts the foot.
O-Originates on the lateral condyle of tibia; proximal, anterior shaft of fibula; and interosseous membrane.
O-Originates on the dorsal surface of calcaneus.
I-Inserts at the tuberosity of the fifth metatarsal.
O-Originates on the anterior and lateral shaft of the femur.
M-This muscle has the longest tendon in the body.
A-Extends the first toe, dorsiflex the ankle, and inverts the foot.
I-Inserts on the distal phalanges of second through fifth toes.
A-Abducts the first toe, and assists to flex the first toe.
N-Innervates the Tibial L4, 5, S1 nerve.
O-Originates on the medial and lateral sides of plantar surface of calcaneus.
O-Originates on the lateral process of calcaneus and plantar aponeurosis.
M-Sometimes called the "second heart" because of its important role in its strong contractions returning blood from the leg to the heart.
N-Innervates the Superior Gluteal L4, 5, S1 nerve.
M-Has the nickname "the key which unlocks the knee."
I-Inserts on the middle phalanges of second through fifth toes.
M-This is the longest muscle in the body.
A-Abducts the 2nd-4th toes, and flexes the 2nd-4th toes.
O-Originates at the head of the fibula and proximal two-thirds of lateral fibula.
