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Spermatogenesis: the male germ line

Describe sperm production, maturation, kinetics and endocrine regulation.

  • 20 explained questions
  • 18 flashcards
  • 102 estimated course minutes

Updated

What you will learn

  • Locate testicular compartments, Sertoli and Leydig cells and the excretory pathways.
  • Follow mitosis, meiosis and ploidy changes from spermatogonium to spermatozoon.
  • Describe spermiogenesis, the acrosome, flagellum and spermatozoon functions.
  • Remember the 74-day duration, four-cell yield and principal regulatory signals.

Course outline

  1. Spermatogenesis: from germ line to spermatozoon

    Follow production, maturation and endocrine regulation of haploid male gametes.

    6 min

  2. Definition, testis and compartments

    Connect embryonic origin, testicular organisation and excretory pathways to the two gonadal functions.

    18 min

  3. Germ line, multiplication and meiosis

    Follow spermatogonia to spermatids while distinguishing mitosis, meiosis I and meiosis II.

    24 min

  4. Spermiogenesis and the spermatozoon

    Describe the nuclear and cytoplasmic transformations that specialise a spermatid.

    24 min

  5. Kinetics and cellular yield

    Memorise the human duration of spermatogenesis and the yield from one B spermatogonium.

    12 min

  6. Regulation and clinical landmarks

    Connect hypothalamus, pituitary, Sertoli cells and Leydig cells to spermatogenesis.

    18 min

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In the same subject

  • Foundations of embryology

    Place human development in time while mastering embryological vocabulary and the principles of meiosis.

  • Mitosis and meiosis

    Two cell-division programmes: preservation of the diploid genome by mitosis, then reduction, recombination, and gamete production by meiosis.

  • Oogenesis and folliculogenesis

    Follow the origin, chronology, meiotic divisions, follicular maturation, and regulation of the female germ line.

  • Ovulation and the oocyte

    Understand the LH surge, release of the secondary oocyte and the properties of the cell that may be fertilized.