explain the process of sperm formation.
Answers
Answer:
Explanation:
WHY MEEE WITH THIS TYPE OF QUESTION. nah nevermind. Spermatogenesis is the process by which haploid spermatozoa develop from germ cells in the seminiferous tubules of the testis. This process starts with the mitotic division of the stem cells located close to the basement membrane of the tubules.
Answer:
Spermatogenesis is the process by which haploid spermatozoa develop from germ cells in the seminiferous tubules of the testis. ... The spermatids are transformed into spermatozoa (sperm) by the process of spermiogenesis. These develop into mature spermatozoa, also known as sperm cells.
In detail (following)
The process of formation of sperms is called spermatogenesis. It occurs in the male gonads testis. Testes are made up of many seminiferous tubules lined by germinal epithelium. Cells of this layer divide to form spermatozoa in the following steps:
(1) Multiplication Phase: At maturity, the primordial germ cells divide by mitosis to produce a large number of spermatogonia. Type A spermatogonia is the stem cells which divide to form spermatogonia. Type B spermatogonia are the precursors of sperms.
(2) Growth Phase: Type B spermatogonium actively grows to a primary spermatocyte. It obtains nourishment from the nursing cells.
(3) Maturation Phase: Each primary spermatocyte undergoes two maturation divisions. The first maturation division is reductional and forms two haploid daughter cells called secondary spermatocytes. Both secondary spermatocytes then undergo second maturation division to form four haploid spermatids.
(4) Spermiogenesis: It is the process of transformation of spermatic to a spermatozoan. The spermatozoa are then known as sperms. The four spermatid becomes the head of the sperm, the Golgi apparatus, containing proteolytic enzymes, becomes the acrosome cap.