Human Anatomy: Muscle Groups

Human Anatomy

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Muscle Function & Other Pertinent Medical Information
ORIGIN: Medial process of posterior calcaneal tuberosity & flexor retinaculum
INSERTION: Medial aspect of base of proximal phalanx of big toe via medial sesamoid
ACTION: Flexes and abducts big toe. Supports medial longitudinal arch
NERVE: Medial plantar nerve (S1,2)

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