During a menstrual cycle, copulation on which of the following phases ...
Fertilization occurs when the egg and sperm are present in the ampulla at the same time and the coitus should happen near the period of ovulation.
Ovulation takes place at the end of the follicular phase or the onset of luteal phase.
During a menstrual cycle, copulation on which of the following phases ...
Explanation:
The menstrual cycle is a natural process that occurs in females that involves the shedding of the uterine lining, ovulation, and the formation of the corpus luteum. Copulation during certain phases of the menstrual cycle increases the probability of fertilization.
Follicular Phase:
The follicular phase is the first phase of the menstrual cycle that starts on the first day of menstruation and lasts for about 14 days. During this phase, follicles in the ovary start to mature, and one follicle will become the dominant follicle that will release an egg during ovulation. Copulation during this phase has a high probability of fertilizing an egg because the egg is released during this time.
Luteal Phase:
The luteal phase is the second phase of the menstrual cycle that starts after ovulation and lasts for about 14 days. During this phase, the corpus luteum forms from the ruptured follicle and secretes hormones that prepare the uterus for implantation. Copulation towards the end of the luteal phase has a low probability of fertilizing an egg because the egg has already been released during ovulation, and the corpus luteum is starting to break down.
Menstrual Phase:
The menstrual phase is the shedding of the uterine lining and lasts for about 3-7 days. Copulation during this phase has a low probability of fertilizing an egg because there is no egg to fertilize, and the environment in the uterus is not favorable for implantation.
Conclusion:
In conclusion, copulation towards the end of the luteal phase has the least probability of fertilizing an egg because the egg has already been released during ovulation, and the uterus is not in a favorable environment for implantation.