Important Notes About Oogenesis vs. Spermatogenesis
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- all potential gametes produced before birth
- Meiotic divisions unequal, leading to the formation of polar bodies (eventually destroyed)
- puberty releases the "arrested state" of primary oocytes, leading to ovulation
- Meiosis II does not occur until fertilization of the secondary oocyte by mature sperm
- ovulation and reproduction naturally end during menopause
2. Spermatogenesis:
- spermatogenesis from spermatogenic cells starts at puberty and continues through life
- Meiotic divisions are equal, leading to 4 spermatozoa from original spermatogenic cell
- Meiosis II completed before the sperm leads to fertilization
Tags: Spermatogenesis, Oogenesis
Category: Physiology Notes
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