Why changes are observed in the uterus subsequent to implantation of young embryo?
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The uterine wall thickens that is richly supplied with blood and becomes spongy. A special tissue called placenta develops which connects embryo to the uterine wall that provides nutrients and oxygen to it.
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Answer:
Explanation:
Uterine lining thickens to support to developing embryo.(PLACENTA) Uterine lining is richly supplied with blood vessels so that nutrition and oxygen could be supplied to the developing foetus.
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