Spermatogenesis
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- Question
- Answer
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- There are [...] lobules in each testis.
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- There are [...] seminiferous tubules in each lobule in the testis.
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- What are the 3 layers of membranes which form the testicular capsule?
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- The extension of the tunica [...] into the testis forms the pyramidal lobules which contain the seminiferous tubules.
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- The extension of the tunica albuginea into the testis forms the pyramidal lobules which contain the [...].
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- In which structure of the testis is sperm produced?
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- What are the 2 cell types found in the seminiferous tubules of the testis?
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- What is the cell type interspersed between the seminiferous lobules of the testis?
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- The [...] barrier is formed of Sertoli cells and separates the lumen of the seminiferous tubules from the blood supply.
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- [...] cells in the testes are linked with tight junctions and form the blood-testis barrier.
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- Sertoli cells produce [...] proteins which facilitate the action of testosterone on spermatogonial cells.
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- What are the 5 stages of spermatogenesis?
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- The interval from the beginning of spermatogenesis to the release of mature spermatazoa into the lumen is [...] days.
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- In the testes, the seminiferous tubules empty into a network of ducts called the [...].
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- In the testes, the rete testis empties into a single duct called the [...].
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- From the epididymis, the spermatazoa enter the [...] and then the [...].
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- The ejaculatory ducts terminate in the [...] urethra.
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- At which stage of spermatogenesis is there a repackaging from a rounded shape to an elongated shape?
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- 1° and 2° spermatocytes divide by m[...]sis.
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- Do spermatozoa contain cytoplasm?
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- What is the appearance of a spermatozoon’s nucleus?
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- Semen has an [...] pH.
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- Is the immune system tolerant of spermatozoal Ag?
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- Spermatogonial stem cells divide through m[...]sis to eventually form resting 1° spermatocytes.
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- Which step of the mitotic division of spermatogonial stem cells is not complete and what does this result in?
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- Spermatogonial stem cells divide through mitosis multiple times, eventually forming a syncitium of [...].
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- 1° spermatocytes divide through meiosis into [...].
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- 2° spermatocytes divide through meiosis into [...].
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- Until which stage of spermatogenesis are cells organized in syncytia, joined together by cytoplasmic bridges?
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- Spermatids differentiate and remodel themselves into [...].
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- Does the spermatozoal genome contain histones?
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- In spermatozoa, histones are replaced by [...].
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- What effect do protamines have on chromatin condensation and gene expression?
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- Is spermatogenesis intermittent or continuous?
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- Does spermatogenesis take a constant amount of time?
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- The [...] cells in the seminiferous tubules are sensitive to temperature.
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- Spermatogonial stem cells are [...]ploid ([...]N).
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- 1° spermatocytes are [...]ploid ([...]N).
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- 2° spermatocytes are [...]ploid ([...]N).
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- Spermatids are [...]ploid ([...]N).
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- Spermatozoa are [...]ploid ([...]N).
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