Describe the processes involved for the formation of mature spermatozoa, and a secondary oocyte. Include a...

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Describe the processes involved for the formation of maturespermatozoa, and a secondary oocyte. Include a review of allhormonal regulation involved in the processes of spermatogenesisand oogenesis, as well as the actual formation and maturation ofthe sex cells from spermatogonia and primary oocytes. Maturation ofthe sex cells should discuss the supporting cells for both types ofsex cells, as well as a review of the organs and structures hostingthe maturation and development. Your response should considerformation, development, and maturation for the two sex cells untilthe end of the process, to be considered as: 1) fully functional,mobile spermatozoa in the epididymis, and 2) just after ovulationfor the secondary oocyte.

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Spermatogenesis is the process by which the male gametes called spermatozoa sperms are formed from the primitive spermatogenic cells spermatogonia in the testis It takes 74 days for the formation of sperm from a primitive germ cell Throughout the process of spermatogenesis the spermatogenic cells have cytoplasmic attachment with Sertoli cells Sertoli cells supply all the necessary materials for spermatogenesis through the cytoplasmic attachment STAGES OF SPERMATOGENESIS Spermatogenesis occurs in four stages 1 Stage of proliferation 2 Stage of growth 3 Stage of maturation 4 Stage of transformation 1 Stage of Proliferation Each spermatogonium contains diploid number 23 pairs of chromosomes One member of each pair is from maternal origin and the other one from paternal origin The 23 pairs include 22 pairs of autosomal chromosomes and one pair of sex chromosomes Sex chromosomes are one X chromosome and one Y chromosome During the proliferative stage spermatogonia divide by mitosis without any change in chromosomal number In man there are usually seven generations of spermatogonia The last generation enters the stage of growth as primary spermatocyte During this stage the spermatogonia migrate along with Sertoli cells towards the lumen of See Answer

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