Internal male sexual organs

These are the spermatagonia in the developing male. Larsen's human embryology 4th ed. The corresponding system in females is the female reproductive system.

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Male reproductive system

The gene for sexual differentiation in humanscalled the testis determining factor TDF[13] is located on the internal male sexual organs arm of the Y chromosome. Male accessory organs are derived from mesonephric wolfian ducts. The major androgens secreted by these cells is testosterone and secretion begins 8 to 10 weeks after conception. Sexual identity is determined at fertilization when the genetic sex of the zygote has been initialized by a sperm cell containing either an X or Y chromosome.

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It also contains numerous nerves and blood vessels. This structure attaches to the inferior portion internal male sexual organs the testis and extends to the labial sacral fold of the same side at the same time, a portion of the embryonic mesonephric duct adjacent to the testis becomes attached and convoluted informs the epididymis. At six weeks post conception, the differentiation of the external genitalia in the male and female has not taken place.

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