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The secondary oocyte develops into an ovum during the process of fertilization. When a sperm successfully penetrates the secondary oocyte, it triggers the completion of meiosis II, resulting in the formation of the ovum and a second polar body. This transition typically occurs within the fallopian tubes shortly after ovulation. If fertilization does not occur, the secondary oocyte will not complete meiosis and will be expelled during menstruation.
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What is the difference between ovum and secondary oocyte?
ovum is the product after the secondary oocyte fuses with sperm
When a primary oocyte divides a secondary oocyte and what are produced?
A primary oocyte divides into a secondary oocyte and a polar body during meiosis I. The secondary oocyte undergoes meiosis II to produce a mature ovum (egg) and another polar body.
When does the secondary oocyte complete its second meiotic division to become a mature ovum?
The secondary oocyte completes its second meiotic division upon fertilization by a sperm cell. This leads to the formation of a mature ovum and a polar body.
When the primary oocyte divides a secondary oocyte and what else is produced?
The primary oocyte divides into a secondary oocyte and a polar body during meiosis I. The secondary oocyte then goes through meiosis II to produce a mature ovum (egg) and another polar body.
The cell commonly called the egg or ovum is more correctly called?
The egg or ovum is more correctly called an oocyte. It is referred to as an oocyte until it is fertilized by sperm, after which it becomes an embryo.
What happens to secondary oocyte once its released from the follicle?
Once the secondary oocyte is released from the follicle during ovulation, it enters the fallopian tube. If a sperm cell fertilizes it, the secondary oocyte completes meiosis II, resulting in a mature ovum and a second polar body. If fertilization does not occur, the secondary oocyte will eventually degenerate and be reabsorbed by the body within 24 hours.
What is the period of ovum?
an ovum mature oocyte after meiosis division
What is period of ovum?
an ovum mature oocyte after meiosis division
How does the nucleus of ovum divide?
The nucleus of an ovum does not divide in the same way as in typical somatic cells. Instead, during oogenesis, the ovum undergoes meiosis, where it completes the first meiotic division to form a secondary oocyte and a polar body. The secondary oocyte then arrests in metaphase II until fertilization occurs, after which it completes meiosis, resulting in another polar body and the mature ovum. Thus, the division of the nucleus in an ovum is primarily associated with the process of meiosis, rather than conventional nuclear division.
What is the function of the secondary oocyte?
The secondary oocyte is a key stage in the female reproductive process, specifically in oogenesis. It is formed after the primary oocyte undergoes meiosis I, and it contains the majority of the cytoplasm. The secondary oocyte is released during ovulation and, if fertilized by a sperm cell, it will complete meiosis II to become a mature ovum. Its primary function is to provide the necessary genetic material and cellular resources for successful fertilization and early embryonic development.
Is It the secondary oocyte and not the egg that the sperm fertilizes?
Yes, it is the secondary oocyte that the sperm fertilizes. The secondary oocyte completes meiosis II to become a mature egg only after fertilization.
What structure expels the mature ovum?
The Graffian Follicle in the ovary expels the secondary oocyte (mature ovum) into the peritoneum, where it is picked up by the fimbrae of the Fallopian tubes.
