1) Describe the main phases of the female menstrual cycle. Which parts of the female reproductive system (including the ducts and glands) are important for each of these phases. 2) A woman has a genetic condition that causes luteinizing hormone (LH) surge to occur one week earlier than normal each month. How would this affect her monthly cycle and her ability to have children? 3) Describe how fertilization of an oocyte by more than one sperm is prevented then explain how identical and fraternal twins are brought about. 4) If each chromosome before replication consists of one chromatid and after replication consists of two chromatids, indicate how many chromatids are present in the following stages of a human cell. a) beginning of the G1 phase b) prophase II c) Telophase I d) Telophase II e) end of S phase
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Which parts of the female reproductive system (including the ducts and glands) are important for each of these phases? The female menstrual cycle consists of four main phases: Show more…
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1. Describe the hormonal changes that occur during the ovarian and menstrual cycles. 2. Trace the path of an oocyte from ovary to fertilization. 3. Describe the hormonal changes that occurs during spermatogenesis. 4. What modifications should take place before a sperm is considered mature? Why are these important? 5. Briefly discuss what are the hormonal changes that would occur if a female becomes pregnant. 6. List the steps of fertilization. 7. What is a karyotype? How can it be a useful tool? 8. List the five homeostatic functions of the urinary system?
Madhur L.
The menstrual cycle depends on events within the female ovary. The stages of the menstrual cycle are listed below. For each, note its approximate time span and the related events in the uterus; and then to the right, record the ovarian events occurring simultaneously. Pay particular attention to hormonal events. Menstrual cycle stage Uterine Events Ovarian Events Menstruation Proliferation Secretory Assume that a woman could be an "on demand" ovulator like the rabbit, in which copulation stimulates the hypothalamic-pituitary-gonadal axis and causes LH release, and that an oocyte was ovulated and fertilized on day 26 of her 28-day cycle. Why would a successful pregnancy be unlikely at this time? Differentiate spermatogenesis from spermiogenesis. Assume that a couple has just consummated the sex act and that the sperm have been deposited in the vagina. Trace the pathway of the sperm through the female reproductive tract. Conclusions
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