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Related to secondary oocyte: oogenesis, zona pellucida, primary oocyte
an oocyte in which the first meiotic division is completed; the second meiotic division usually stops short of completion unless fertilization occurs.
an oocyte in the period between the first and second maturation division. It is derived from a primary oocyte shortly before ovulation by a division that splits off the first polar body. If fertilized, it divides into an ootid and the second polar body. Otherwise, it perishes. In humans, it is a round cell about 0.1 mm in diameter and consists of protoplasm that contains some yolk enclosed by a thin cell wall, the vitelline membrane. It is surrounded by the zona pellucida and corona radiata.
sec·on·dar·y o·o·cyte(sek'ŏn-dar-ē ō'ŏ-sīt)
An oocyte in which the first meiotic division is completed; the second meiotic division usually stops short of completion unless fertilization occurs.
The larger of the two cells produced by the first meiotic division of the primary oocyte.See: polar body
See also: oocyte