Module 3 Lesson 2 - 3

Oogenesis

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In the early stages, germ cells or gametes are supported, nurtured, and protected by specialized supporting somatic cells. Mature gametes are produced in a process called gametogenesis. In a female, this process is called oogenesis — the formation of the ovum and the structures that support its development.

In females, the germ cells or gametes are the egg cells. Egg cells begin as oogonia and then develop into primary oocytes. About two million primary oocytes are formed in the ovaries during fetal development. The primary oocytes stay dormant in the female body until the beginning of puberty.

Watch and Listen

Going Beyond

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Build on what you know about the female reproductive system by finding out what can be done if something goes wrong with its structures or functions. You can do further research on the main female reproductive structures to find a dysfunction that can occur with each one, as well as a treatment to overcome each dysfunction.