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Anatomy

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Embryology

Question
9 out of 50
 

At day 26 of the menstrual cycle, what is menstruated (AIIMS May 2012)



A Oogonium

B Oocyte arrested in metaphase

C Primary oocyte

D Oocyte arrested in prophase

Ans. B

Oocyte arrested in metaphase

Ovulated primary oocytes continue meiosis-1 and form secondary oocyte, which then get arrested at meiosis-2 until fertilization

 If there is no fertilization, the secondary oocyte arrested in metaphase-II will be menstruated

 If fertilization occurs the mature oocyte will be produced from secondary oocyte with the release of second polar body along with it

2nd polar body is released after fertilization

Embryology Flashcard List

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