Human Anatomy: Muscle Groups

Human Anatomy

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Muscle Function & Other Pertinent Medical Information
ORIGIN: Oblique head: base of 2, 3, 4 metatarsals. Transverse head: plantar metatarsal ligaments and deep transverse ligament
INSERTION: Lateral side of base of proximal phalanx of big toe and lateral sesamoid.
ACTION: Adducts and flexes metatarsophalangeal joint of big toe. Supports transverse arch
NERVE: Deep branch of lateral plantar nerve (S2, 3)

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