In the module in which the placenta was treated, we saw that during the intrauterine period, this transitory organ is responsible for the water and electrolyte households, and not the kidneys. The fetal kidneys only begin to produce urine in the 12th week. This is then excreted into the amniotic cavity and is responsible for producing up to 80% of the amniotic fluid. Although it is closely connected with that of the genital system, the development of the urinary system starts somewhat earlier (after the 3rd week). It begins with the formation of the nephrogenic cord (arises out of the intermediate mesoderm) 9 and the urogenital sinus 15 and proceeds, as quite often occurs during embryonic development, in a cranio-caudal gradient.
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Color code
for the
urinary system
module
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Urine excreting system:
yellow-beige-
orange
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Urine forming system:
pink-lilac-violet |
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