PATHOLOGY MCQ
FEMALE REPRODUCTIVE SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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When does oogenesis begin?
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at birth
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before birth
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at the onset of adulthood
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at the onset of puberty
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Explanation:
Detailed explanation-1: -Oogenesis is the creation of an egg (also known as an ovum or oocyte) in the female foetus. Oogenesis starts in the foetus at around 7 weeks’ gestation, when primordial germ cells colonize the newly formed ovary. They are now referred to as oogonia.
Detailed explanation-2: -No, oogenesis begins during embryonic development, and the ovaries do not add any more oogonia after birth.
Detailed explanation-3: -Oogenesis occurs in the outermost layers of the ovaries. As with sperm production, oogenesis starts with a germ cell, called an oogonium (plural: oogonia), but this cell undergoes mitosis to increase in number, eventually resulting in up to one to two million cells in the embryo.
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