3B) Bio-Psychology. Discuss how human reproductive organs develop.

3B: Bio-Psychology
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3B: Bio-Psychology
Question a
The development of human reproductive organs starts while the child is still in the womb. It is part of prenatal development, where sexual differentiation occurs as sex organs develop. The permanent organs in an adult are usually preceded by embryonic development and usually disappear at the close of the fetal life. It is believed that this system's development is closely associated with the development of the urinary system. The development starts with the indifferent stage, where it is impossible to differentiate whether someone is male or female. It is called the gonads stage, and the genital ridges start developing from the mesoderm and the surrounding epithelium tissue. The indifferent gonad is usually formed through the proliferation of epithelium that later penetrates the mesoderm, leading to primitive sex cords.
The male's development is influenced by the Y chromosome, which contains the SRY gene and stimulates the development of primitive sex cords that form testis cords. There is also a fibrous connective tissue that forms a layer around the chords. The testis cords break further to form the rete testis, while the remaining has two cells, germ cells and Sertoli cells. During puberty, these cords acquire lumen, and they end up becoming seminiferous tubules. This is the place where sperms usually form. Leydig cells, positioned between the testis cords, begin producing testosterone during the eight weeks, which is the main cause of differentiation.
The lack of a Y chromosome in females leads to no influence in development. Th...