Gonadal Cord

**Semantic type:** Embryonic Structure

**Definition:** Fingerlike structures arising from the epithelium of the embryonic genital ridge that form the indifferent gonads, which consist of two different regions: an outer cortical region and an inner medullary region. After sexual differentiation, they become the testis cords in males, and the cortex regresses; in females they become the cortical cords, and the medulla regresses.