REVIEW & CONCEPTS 1. An ectopic pregnancy occurs when the embryo implants somewhere other than within the uterine cavity. The usual location for an ectopic pregnancy is within the uterine tubes. Explain why this is dangerous. 2. The endometrial layer of the uterus consists of two layers, a superficial stratum functionalis and a deeper stratum basalis. Explain the function of each layer. 3. Entry of the genetic material of the fertilizing sperm marks the "moment of conception". Although only one sperm actually enters the cytoplasm of the secondary oocyte, successful fertilization requires that multiple sperm encounter the oocyte & corona radiata/zona pellucida (dozens to over 100). Explain why. 4. Explain the importance of the location of the testes (within the scrotum instead of inside the ventral body cavity).
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An ectopic pregnancy is dangerous because the uterine tubes are not designed to support the growth and development of an embryo. As the embryo grows, it can cause the tube to rupture, leading to severe internal bleeding and potentially life-threatening Show more…
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