What Is an Oocyte?

Oocyte: An oocyte that undergoes meiosis during oogenesis. It is divided into primary oocytes, secondary oocytes, and mature oocytes, which are the products of the first meiotic division and the second meiotic division produced after oocyte differentiation and DNA replication division.

Oocyte

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Oocytes proliferate and differentiate to form primary oocytes. A primary oocyte divides to form a secondary oocyte and a secondary oocyte

From

Female ovulation

Oocyte primary oocyte

Chinese name:

Primary oocyte English name: primary oocyte Definition: Oocytes that are about to undergo meiosis after mitotic proliferation.

Oocyte secondary oocyte

Chinese name: Secondary oocyte English name: secondary oocyte Definition: Primary oocytes are produced after the first meiosis and are large daughter cells that contain almost all of the primary oocyte cytoplasm.

Oocyte polar body

Chinese name:

English name of polar body: polar body; polocyte Definition 1: Oocytes produced by meiosis, except for one mature egg cell, have two non-fertilized haploid small cells. Definition 2: During ovulation, fine haploid small cells that are produced by meiosis and cannot develop into functional egg cells.

Oocyte

The structure of an egg cell

In higher organisms, egg cells are produced by the ovaries. All mammals have immature egg cells in their ovaries at birth, and the number of eggs will not increase after birth. Eggs and sperm combine to fertilize to form a fertilized egg, the beginning of a new life. Some animals (such as birds) undergo in vitro fertilization, while others (such as most fish) undergo in vitro fertilization. For human reproduction, it is essential to count eggs. The egg is the largest cell in the human body and a cell unique to women. It is the mother cell that gives birth to new life.