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Ovulation in human female normally takes place during the menstrual cycle
Option: 1
at the mid secretory phase
Option: 2
just before the end of the secretory phase
Option: 3
at the beginning of the proliferative phase
Option: 4
at the end of the proliferative phase
Answers (1)
Menstrual Cycle -
- Menstruation is bleeding from the uterus of adult females at intervals of one lunar month.
- The cycle is necessary for the production of eggs and the preparation of the uterus for pregnancy.
- Beginning of menstruation or first menstruation is called menarche. It occurs between 12 and 15 years.
- In human females, menstruation is repeated at an average interval of about 28/29 days, and the cycle of events starting from one menstruation till the next one is called the menstrual cycle.
- One ovum is released (ovulation) during the middle of each menstrual cycle.
- The menstrual cycle can be divided into:
- Ovarian cycle, which is made up of:
- Follicular phase
- Ovulation
- Luteal phase
- Uterine cycle, which is made up of:
- Menstruation
- Proliferative phase
- Secretory phase
- Ovarian cycle, which is made up of:
In simple terms, Ovulation takes place under the influence of LH and FSH. It normally takes place at the end of the proliferative phase that is 14th day during menstrual cycle. The LH surge stimulates the completion of reduction division of oocyte. Following ovulation, the Graafian follicle changes to corpus luteum.
Hence, the correct option is (d).
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