What cells directly support sperm development

Reference no: EM133347747

Questions:

1. Under normal negative feedback conditions, what would happen to the levels of GnRH, LH, FSH, and the rate of gamete development in a woman who was taking estrogen pills to regulate her menstrual cycle, control acne, or avoid becoming pregnant? Why?

2. Just as you need two pituitary hormones to control two separate testis or ovary functions (making sperm or eggs and making steroid hormones), you need to have some way of separately controlling LH and FSH. What hormone feeds back negatively on FSH, but not LH? Where does this hormone come from? Can you think of a condition under which you would want/need LH to be high but not FSH, or vice versa

3.. If a young man had his prostate gland removed due to cancer or some other problem, how might that affect his fertility? Be specific about the potential roles of different prostate gland products.

4.. The first half of the cycle is called the follicular phase. What is happening to the follicles during this time?What is happening to hormone levels? And what is happening in the uterus?

5.When the estrogen and LH settle back down again, the egg is hopefully entering the uterine (Fallopian) tube and we have now entered the second half of the cycle, the luteal phase. What is the highest hormone during this phase? Where does that hormone come from? What is happening in the uterus?

6. How does a sperm overcome the barrier of the layers of cellular and glycoprotein protection around the egg? Why do you think the egg is surrounded by these protections instead of making fertilization easier for the sperm?

7. . " the main role of human placental lactogen (hPL) is "alteration of the mother's glucose and fatty acid metabolism to support fetal growth." To be specific, this hormone causes women to become insulin resistant, often hyperglycemic as a result, and in combination with other hormones also from the fetal part of the placenta, hypertensive. How would the fetus benefit from the mother being hyperglycemic and hypertensive?

8. What cells directly support sperm development? How do they do that, and where are these cells? Which cells produce testosterone and other androgens?

Reference no: EM133347747

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