EMBRYOLOGY
FERTILISATION EARLY DEVELOPMENT OF EMBRYO AND IMPLANTATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Trophoblast rupturing
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Blastocyst burrowing into the endometrium
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Fertilisation
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Blastocyst disintegrating
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Detailed explanation-1: -Why does implantation bleeding happen? Implantation occurs when a fertilized egg attaches to the lining of your uterus. Your uterine lining is filled with blood vessels and vascular tissue. As the embryo embeds into that lining, light bleeding can occur.
Detailed explanation-2: -Implantation. Once the embryo reaches the blastocyst stage, approximately five to six days after fertilization, it hatches out of its zona pellucida and begins the process of implantation in the uterus.
Detailed explanation-3: -When Does Implantation Bleeding Happen? Implantation bleeding typically occurs between days 10–14 of your cycle. And if you’re familiar with the reproductive cycle, this is right around the same time that a menstrual period occurs.