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A   the uterus

Müllerian ducts in the female differentiate into the Fallopian tubes, the uterus and the vagina. In most mammals, uterus horns remain distinct. In primates and man they fuse to form a simplex type uterus.

The cervix is actually a part of the uterus itself, the neck that extends downward into the vagina.

The primitive gonads of both the male and the female embryo are composed of three components, including the primordial germ cells that give rise to parts of the ovarian structure, the mesenchyme of the genital ridge and the epithelial covering.

The primitive sex cords develop into the seminiferous tubules in the male.

The external genitalia, including the urethral opening in the female, arise from the area of the genital fold and the genital swelling that is common to both sexes at the indifferent stage of development.

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