blastocyst is typically implanted to endometrial wall in the female human reproductive system.
where does the blastocyst implanted in the female human reproductive system typically?
endometrial wall
implantation is critical to the survival and development of the early human embryo. it establishes a connection between the mother and the early embryo which will continue through the remainder of the pregnancy. implantation is made possible through structural changes in both the blastocyst and endometrial wall. the zona pellucida surrounding the blastocyst breaches, referred to as hatching. this removes the constraint on the physical size of the embryonic mass and exposes the outer cells of the blastocyst to the interior of the uterus. furthermore, hormonal changes in the mother, specifically a peak in luteinizing hormone (lh), prepare the endometrium to receive and envelop the blastocyst. the immune system is also modulated to allow for the invasion of the foreign embryonic cells. once bound to the extracellular matrix of the endometrium, trophoblast cells secrete enzymes and other factors to embed the blastocyst into the uterine wall. the enzymes released degrade the endometrial lining, while autocrine growth factors such as human chorionic gonadotropin (hcg) and insulin-like growth factor (igf) allow the blastocyst to further invade the endometrium.
blastocyst
internal and external organs are included in the reproductive system. there are two reproductive systems including the male and female, which contain different organs from one another. these systems work together in order to produce offspring.





























section::::human reproductive biology.:reproductive systems.:female reproductive system.





























the female reproductive system includes the structures involved in ovulation, fertilization, development of an embryo, and birth.





























these structures include:





























bullet::::- ovaries





























bullet::::- oviducts





























bullet::::- uterus





























bullet::::- vagina





























bullet::::- mammary glands





























estrogen is one of the sexual reproductive hormones that aid in the sexual reproductive system of the female.





























section::::human reproductive biology.:reproductive systems.:male reproductive system.
reproductive biology