Spermatogenesis, oogenesis, and the events of fertilization through implantation tested on USMLE Step 1.
33 cards · basic cards · AI-written, checked twice. Edit anything.
- Where does spermatogenesis occur?
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Seminiferous tubules of the testis- What are the diploid stem cells lining the seminiferous tubules that give rise to sperm?
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Spermatogonia- What is the ploidy and DNA content of a primary spermatocyte?
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Diploid, 4N DNA content- Meiosis I of a primary spermatocyte produces what cell?
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Secondary spermatocyte- What is the ploidy and DNA content of a secondary spermatocyte?
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Haploid, 2N DNA content- Meiosis II of a secondary spermatocyte produces what cell?
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Spermatid- What is the process called that transforms a round spermatid into a mature spermatozoon?
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Spermiogenesis- About how long does the full process of spermatogenesis take?
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About 64 days- Which pituitary hormone acts on Sertoli cells?
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FSH (follicle-stimulating hormone)- What hormone do Leydig cells produce?
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Testosterone- Which pituitary hormone acts on Leydig cells?
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LH (luteinizing hormone)- Which organelle gives rise to the sperm acrosome?
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Golgi apparatus- What is the function of the acrosome?
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Contains hydrolytic enzymes that help sperm penetrate the corona radiata and zona pellucida- What does the sperm midpiece contain that powers motility?
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Mitochondria- At what stage of meiosis are primary oocytes arrested from before birth until ovulation?
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Prophase I (diplotene stage)
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