Spermatogonium - Wikipedia
A spermatogonium (pl.: spermatogonia) is an undifferentiated male germ cell. Spermatogonia undergo spermatogenesis to form mature spermatozoa in the seminiferous tubules of the testis. There are three subtypes of spermatogonia in humans: Type A (dark) cells, with dark nuclei.
26.4C: Spermatogenesis - Medicine LibreTexts
2023年1月17日 · spermatogonium: Any of the undifferentiated cells in the male gonads that become spermatocytes. Spermatogenesis is the process by which male primary sperm cells undergo meiosis and produce a number of cells calls spermatogonia, from which the primary spermatocytes are derived.
22.4: Functions of the Male Reproductive System
2021年12月27日 · The process begins with a diploid stem cell called a spermatogonium (plural, spermatogonia), and involves several cell divisions. The entire process takes at least ten weeks to complete, including maturation in the epididymis.
Spermatogenesis - Developmental Biology - NCBI Bookshelf
Spermatogenesis is the production of sperm from the primordial germ cells. Once the vertebrate PGCs arrive at the genital ridge of a male embryo, they become incorporated into the sex cords.
Spermatogonia: Location and function - Kenhub
2021年4月8日 · Spermatogonia are small, round stem and progenitor cells of the testes that give rise to spermatozoa through the process of spermatogenesis. They are diploid cells and possess 23 pairs of chromosomes.
Spermatogonium | physiology | Britannica
The immature cells (called spermatogonia) are all derived from cells called stem cells in the outer wall of the seminiferous tubules. The stem cells are composed almost entirely of nuclear material. (The nucleus of the cell is the portion containing the …
Spermatogenesis – Basic Human Physiology
Spermatogonia are the stem cells of the testis, which means that they are still able to differentiate into a variety of different cell types throughout adulthood. Spermatogonia divide to produce primary and secondary spermatocytes, then spermatids, which finally produce formed sperm.
Spermatogenesis: An Overview | SpringerLink
2011年1月1日 · The process of differentiation of a spermatogonium into a spermatid is known as spermatogenesis. It involves both mitotic and meiotic proliferation as well as extensive cell remodeling. In humans, the process of spermatogenesis starts at …
Spermatogonium - an overview | ScienceDirect Topics
Spermatogonia are rounded cells that lie in contact with the basement membrane of the seminiferous tubules. They are the stem cells of the system, dividing to maintain their own numbers and to produce the cells that embark on the process of development into spermatozoa.
Spermatogonium - an overview | ScienceDirect Topics
Spermatogonia. The cells that divide by mitosis and constitute the pool of cells from which meiosis and spermatogenesis proceed are termed spermatogonia.