Scelta multipla
Which of these describes the luteal phase of the menstrual cycle?
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27. The Reproductive System
Introduction to the Reproductive System
Scelta multipla
Which description is true for a primary oocyte?
A
It completes meiosis I immediately after being formed.
B
It is formed during the luteal phase of the menstrual cycle.
C
It undergoes meiosis II to form a secondary oocyte.
D
It is arrested in prophase I of meiosis until puberty.
Guida verificata passo dopo passo1
Understand the process of oogenesis, which is the formation of oocytes in the female reproductive system.
Recognize that oogenesis begins with the formation of primary oocytes during fetal development.
Learn that primary oocytes are arrested in prophase I of meiosis during fetal development and remain in this stage until puberty.
At puberty, hormonal changes trigger the continuation of meiosis I, but only a few primary oocytes complete meiosis I to form secondary oocytes.
Note that the secondary oocyte is arrested in metaphase II and will only complete meiosis II if fertilization occurs.
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