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  2. Spermatocyte - Wikipedia

    en.wikipedia.org/wiki/Spermatocyte

    Spermatogonia going through mitosis to form primary spermatocytes in Grasshopper testes. Spermatocytogenesis. At puberty, spermatogonia located along the walls of the seminiferous tubules within the testis will be initiated and start to divide mitotically, forming two types of A cells that contain an oval shaped nucleus with a nucleolus attached to the nuclear envelope; one is dark (Ad) and ...

  3. Spermiogenesis - Wikipedia

    en.wikipedia.org/wiki/Spermiogenesis

    The process of spermatogenesis.1. Primary spermatocyte 2. Secondary spermatocytes 3. Spermatids 4. Sperm . Spermiogenesis is the final stage of spermatogenesis, during which the spermatids develop into mature spermatozoa.

  4. Spermatogenesis - Wikipedia

    en.wikipedia.org/wiki/Spermatogenesis

    Spermatogenesis produces mature male gametes, commonly called sperm but more specifically known as spermatozoa, which are able to fertilize the counterpart female gamete, the oocyte, during conception to produce a single-celled individual known as a zygote.

  5. Spermatogonium - Wikipedia

    en.wikipedia.org/wiki/Spermatogonium

    At this stage, the germ cells are now referred to as primary spermatocytes. [3] The primary spermatocytes undergo a primary division, yielding two secondary spermatocytes each with 23 chromatids. The secondary spermatocytes then undergo a second division to produce two spermatids, each with 23 chromosomes. [3]

  6. Sperm - Wikipedia

    en.wikipedia.org/wiki/Sperm

    Sperm cells form during the process known as spermatogenesis, which in amniotes (reptiles and mammals) takes place in the seminiferous tubules of the testicles. [3] This process involves the production of several successive sperm cell precursors, starting with spermatogonia , which differentiate into spermatocytes .

  7. Sertoli cell - Wikipedia

    en.wikipedia.org/wiki/Sertoli_cell

    Sertoli cells are specifically located in the convolutions of the seminiferous tubules, since this is the only place in the testes where spermatozoa are produced.

  8. Sexual reproduction - Wikipedia

    en.wikipedia.org/wiki/Sexual_reproduction

    Sexual reproduction is a type of reproduction that involves a complex life cycle in which a gamete (haploid reproductive cells, such as a sperm or egg cell) with a single set of chromosomes combines with another gamete to produce a zygote that develops into an organism composed of cells with two sets of chromosomes . [1]

  9. Human reproductive system - Wikipedia

    en.wikipedia.org/wiki/Human_reproductive_system

    The primary direct function of the male reproductive system is to provide the male sperm for fertilization of the ovum. [3] The major reproductive organs of the male can be grouped into three categories. The first category produces and stores sperm (spermatozoa).