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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 does the secondary oocyte complete its second meiotic division to become a mature ovum?
At fertilization the secondary oocyte completes its second meiotic division
Describe the functions of the gonads?
Gonads are testes and ovaries. Testes produce spermatozoa by spermatogenesis and ovaries produce ova by oogenesis. Spermatozoa are produced via mitosis, producing diploid primary spermatocytes, then meiosis I which produces haploid secondary spermatocytes, which are converted to spermatids by meiosis II. Spermatids become spermatozoa. For the inchoate ovum, a diploid primary oocyte forms, followed meiotically by a haploid secondary oocyte. Ovulation occurs and the secondary oocyte only becomes a true ovum after syngamy. During the process, primary polar bodies become secondary polar bodies and are all rejected. Info from Raven, Johnson, Losos, Mason, Singer. Biology 8th Edition. (2008). McGraw Hill.
During cytokinesis in a female what divides unequally?
The oocyte (immature ovum or egg). It produces a secondary oocyte (large, lots of cytoplasm) and a polar body (small, does not survive).
A primary oocyte is closely surrounded by flattened epithelial cells called?
follicular
When a primary oocyte divides a secondary oocyte and what are produced?
polar body
When the primary oocyte divides a secondary oocyte and what else is produced?
first polar body
What is the difference between ovum and secondary oocyte?
ovum is the product after the secondary oocyte fuses with sperm
Prenatal maturation of oocyte?
Primordial, secondary, tertiary, and antral are the basic steps in a developing oocyte
Difference between primary and secondary oocyte?
Any oogonia that has arrested itself in meiosis I prophase-dipotene on the onset of OMI (oocye maturation inhibition) hormone in the 3rd month of pregnancy and there after is a primary oocyte. On the urge of Leutinizing hormone which induces the pre-ovulatory phase, the primary oocyte completes meiosis I and arrests itself in meiosis II metaphase, which would only be completed if fertilization occurs, otherwise it will degenrate in 24 hours. On the completion of meiosis I, a SECONDARY oocyte and forst polar body is going to be formed.
How many egg cells come form a female germ cell?
One primary oocyte divides by meiosis and produces one polar body and one secondary oocyte. The polar body goes on to produce two more polar bodies, and the secondary oocyte divides into one polar body and one ovum. Therefore, one cell is produced from one primary oocyte.
What is metamorphosis in case of the development of spermatogenasis?
The progressive changes going on with the primordial germ cell resulting its differentiation into primary oocyte; secondary oocyte; spermati and finally spermatozoa is called metamorphosis in spermatogenasis. Javeed Farooqi M.sc
What transports secondary oocyte toward uterus?
The fallopian tubes also knows as the uterine tubes transport the secondary oocyte or the fertilized egg to the uterus.
What forms part of the primary follicle in the ovary?
A primary follicle consists of a primary oocyte surrounded by a single layer of enlarged cuboidal epithelium. Recall that previously, there was a primary oocyte in a primordial follicle surrounded by a thinner single layer of squamous follicular cells.
When does the secondary oocyte complete its second meiotic division to become a mature ovum?
At fertilization the secondary oocyte completes its second meiotic division
Is the process by which a secondary oocyte is released from the ovary?
Ovulation
What is the name of the expulsion of the secondary oocyte from the ovary?
Ovulation
