The menstrual cycle can be divided into:
Correct answer: B. Two cycles
- A. Single cycle
- B. Two cycles
- C. Three cycles
- D. Four cycles
Explanation
The menstrual cycle is governed by hormonal changes. These changes can be altered by using hormonal birth control to prevent pregnancy. Each cycle can be divided into two phases based on events in the ovary (ovarian cycle) or in the uterus (uterine cycle).
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About Reproduction
Human reproduction covers the male and female reproductive organs, gamete formation, fertilization, implantation and hormonal regulation. The menstrual cycle includes ovarian and uterine changes controlled by pituitary and ovarian hormones, while sexually transmitted diseases are studied through their causes, transmission, symptoms, prevention and effects on fertility.
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