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Most correctly guessed answers

      • There are [...] lobules in each testis.
      • 20
      • 100.0%
      • There are [...] seminiferous tubules in each lobule in the testis.
      • 5
      • 100.0%
      • The extension of the tunica albuginea into the testis forms the pyramidal lobules which contain the [...].
      • seminiferous tubules
      • 100.0%
      • In which structure of the testis is sperm produced?
      • Seminiferous tubules
      • 100.0%
      • What are the 2 cell types found in the seminiferous tubules of the testis?
      • Spermatogonial stem cells and Sertoli cells
      • 100.0%
      • What is the cell type interspersed between the seminiferous lobules of the testis?
      • Leydig cells
      • 100.0%
      • The [...] barrier is formed of Sertoli cells and separates the lumen of the seminiferous tubules from the blood supply.
      • blood-testis
      • 100.0%
      • [...] cells in the testes are linked with tight junctions and form the blood-testis barrier.
      • Sertoli
      • 100.0%
      • Sertoli cells produce [...] proteins which facilitate the action of testosterone on spermatogonial cells.
      • androgen-binding
      • 100.0%
      • What are the 5 stages of spermatogenesis?
      • Spermatogonial stem cell, 1° spermatocyte, 2° spermatocyte, spermatid, spermatozoon
      • 100.0%
      • The interval from the beginning of spermatogenesis to the release of mature spermatazoa into the lumen is [...] days.
      • 64
      • 100.0%
      • In the testes, the seminiferous tubules empty into a network of ducts called the [...].
      • rete testis
      • 100.0%
      • In the testes, the rete testis empties into a single duct called the [...].
      • epipidymis
      • 100.0%
      • From the epididymis, the spermatazoa enter the [...] and then the [...].
      • vas deferens, ejaculatory duct
      • 100.0%
      • The ejaculatory ducts terminate in the [...] urethra.
      • prostatic , urethra.
      • 100.0%
      • At which stage of spermatogenesis is there a repackaging from a rounded shape to an elongated shape?
      • Spermatid to spermatozoon
      • 100.0%
      • 1° and 2° spermatocytes divide by m[...]sis.
      • eio
      • 100.0%
      • What is the appearance of a spermatozoon’s nucleus?
      • Condensed
      • 100.0%
      • Semen has an [...] pH.
      • alkaline
      • 100.0%
      • Spermatogonial stem cells divide through m[...]sis to eventually form resting 1° spermatocytes.
      • ito
      • 100.0%
      • 1° spermatocytes divide through meiosis into [...].
      • 2° spermatocytes
      • 100.0%
      • 2° spermatocytes divide through meiosis into [...].
      • spermatids
      • 100.0%
      • Until which stage of spermatogenesis are cells organized in syncytia, joined together by cytoplasmic bridges?
      • Spermatids are still joined, spermatazoa are separated
      • 100.0%
      • Spermatids differentiate and remodel themselves into [...].
      • spermatozoa
      • 100.0%
      • Does the spermatozoal genome contain histones?
      • No
      • 100.0%
      • What effect do protamines have on chromatin condensation and gene expression?
      • Very condensed chromatin with no gene expression
      • 100.0%
      • Is spermatogenesis intermittent or continuous?
      • Continuous
      • 100.0%
      • Does spermatogenesis take a constant amount of time?
      • Yes
      • 100.0%
      • The [...] cells in the seminiferous tubules are sensitive to temperature.
      • Sertoli
      • 100.0%
      • Spermatogonial stem cells are [...]ploid ([...]N).
      • di, 2
      • 100.0%
      • 1° spermatocytes are [...]ploid ([...]N).
      • di, 4
      • 100.0%
      • 2° spermatocytes are [...]ploid ([...]N). 
      • ha, 2
      • 100.0%
      • Spermatids are [...]ploid ([...]N).
      • ha
      • 100.0%
      • Spermatozoa are [...]ploid ([...]N).
      • ha
      • 100.0%
      • What are the 3 layers of membranes which form the testicular capsule?
      • Tunica vaginalis
        Tunica albuginea
        Tunica vasculosa
      • 0.0%
      • The extension of the tunica [...] into the testis forms the pyramidal lobules which contain the seminiferous tubules.
      • albuginea
      • 0.0%
      • Do spermatozoa contain cytoplasm?
      • No
      • 0.0%
      • Is the immune system tolerant of spermatozoal Ag?
      • No
      • 0.0%
      • Which step of the mitotic division of spermatogonial stem cells is not complete and what does this result in?
      • Cytokinesis, resulting in resting 1° spermatocytes which are joined by cytoplasmic bridges
      • 0.0%
      • Spermatogonial stem cells divide through mitosis multiple times, eventually forming a syncitium of [...].
      • resting 1° spermatocytes
      • 0.0%
      • In spermatozoa, histones are replaced by [...].
      • protamines
      • 0.0%