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