Monday, May 5, 2008

Hormonal Control of the Menstrual Cycle

1. What is a hormone? Chemical produced by the brain to regulate different things in your body.

2. What system is responsible for the production of hormones? The endocrine.
3. Sketch a picture of the female reproductive system. Include the oviduct, ovaries, uterus, cervix and vagina.



4. Where does the embryo undergo most of its development? In the uterus.
5. What is another name for the fallopian tube? Oviduct.
6. Where does fertilization take place? In the fallopian tube.
7. What is ovulation? When the mature ovum contained in the follicle leaves and migrates down the oviduct.
8. What is the follicle converted to? A corpus luteum.
9. What happens during the flow phase? Hormone production by the ovaries ceases and the uterine lining sloughs off.
10. What happens during the follicular phase? The developing follicle enlarges and produces a hormone which causes the uterine lining to thicken.
11. What happens during the luteal phase? A hormone from the pituitary converts the follicle to a corpus luteum. Uterine lining is still thickening.
12. What happens to the uterine lining during the first phase? It is broken down.
13. What are the four hormones that control the menstrual cycle? Estrogen, progesterone, LH, FSH.
14. As FSH increases in concentration in the blood , the follicle is? Growing an egg.
15. When the follicle ruptures it releases what? The egg.
16. What is considered the hormone of pregnancy? Progesterone.
17. What is the rhythm method? Timing intercourse around ovulation to decrease chances of pregnancy.
18. What do you call a couple using the rhythm method? Parents! Ha ha ha!
19. What is menopause? What causes it? The halting of the menstrual cycle that occurs around the age of 45-50. It's caused by the stopping of LH production by the pituitary.
20. When does fertilization occur? When the sperm and the egg meet!
21. When is a zygote formed? After fertilization.
22. What is a placenta? An organ that is produced to help nourish and protect the growing baby.

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