how does the pituitary gland control the maturation of the gonads
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Development of the indifferent gonad
The gonads develop from the intermediate mesoderm that is situated in the paired longitudinal urogenital ridges, the more medial part of these ridges being the gonadal ridges. In the sixth week primordial germ cells migrate from the wall of the yolk sac via the dorsal mesentery of the hindgut to occupy the gonadal ridges. The arrival of these cells induces the cells in the ridges to form primitive sex cords (derived from the mesonephros and overlying coelomic epithelium) . At this stage the gonad is indifferent or uncommitted , and consists of an outer cortex and an inner medulla. During the next week the male and female gonads begin to differentiate . If germ cells fail to migrate to the gonadal ridges the gonadsdo not develop.
The gonads develop from the intermediate mesoderm that is situated in the paired longitudinal urogenital ridges, the more medial part of these ridges being the gonadal ridges. In the sixth week primordial germ cells migrate from the wall of the yolk sac via the dorsal mesentery of the hindgut to occupy the gonadal ridges. The arrival of these cells induces the cells in the ridges to form primitive sex cords (derived from the mesonephros and overlying coelomic epithelium) . At this stage the gonad is indifferent or uncommitted , and consists of an outer cortex and an inner medulla. During the next week the male and female gonads begin to differentiate . If germ cells fail to migrate to the gonadal ridges the gonadsdo not develop.
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by the synthesis of gonadotropic hormone
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