精子发生和精子发生之间的差异

Spermatogenesis vs Spermiogenesis

An important objective in the life of all the living beings is the reproduction and making sure that their kind will survive in the future. In order to reach that objective successfully, the sexual reproduction is instrumental, and the gametes from males and females are mixed with each other to produce offspring. Spermatogenesis is the basic mean of producing the male gametes, and spermiogenesis is a stage of the main process of production.

Spermatogenesis

精子发生是一个连续事件，最终从原代精子细胞中产生数百万个完全成熟的快速游泳精子。每个主要细胞都经历了不同的阶段，最后变成了一个完整的精子细胞，带有摇摆的尾巴和一个穿孔的Acrosos。精子发生，精子发生，精子发生和精子是精子发生的四个主要步骤。精子生成始于二倍体的精子细胞，这些细胞在通过有丝分裂后在此阶段结束时成为原发性精子细胞。精子生成是主要过程的第二阶段，从上一步产生的原发性精子细胞在经过减数分裂后成为次级精子细胞 - 1. 1.此步骤的第二阶段通过减数分裂产生单倍体精子 - 2来自次生精子细胞。精子生成是促进的精子发生的非常关键的阶段，它进入了精子的最后阶段。最后，在男性生殖系统内部产生了发达且功能齐全的精子。精子发生的初始阶段出现在睾丸中，然后精子发展到附睾以进行精子生成。简而言之，原代精子细胞的遗传组成在精子发生过程中从二倍体变为单倍体状态，这是一个分阶段发生的过程。在此过程中，由于有丝分裂和减数分裂引起的细胞数量增加。

Spermiogenesis

Spermiogenesis is one of the very crucial steps in spermatogenesis, and it is the time when sperms are facilitated by organelles, and form the characteristic structure of each sperm. The resulted spermatids from the previous stage are more or less circular in shape, and each contains the genetic materials with centrioles, mitochondria, and Golgi bodies. The arrangement of those organelles are arranged in such a way that the sperm would be able to penetrate all the obstacles could be conquered. The acrosome is formed at one end of the cell by secreting enzymes from the Golgi bodies and the mitochondria are concentrated at the other end of the cell forming the mid piece. The Golgi complex then covers the condensed genetic materials and the acrosome. Tail formation is the next phase of spermiogenesis, and one of the centrioles is extended to become the tail of the sperm. It is interesting to know that the tail is oriented towards the lumen of the seminiferous tubule. During this stage, the genetic materials do not undergo changes but becomes condensed and protected. The shape of the cell is changed into more like an arrow with a long tail and a defined head.

What is the difference between Spermatogenesis and Spermiogenesis? •精子发生是精子产生的整个过程，而精子发生是整个过程的最后一个主要阶段。 • Spermatogenesis changes the genetic materials from diploid to haploid but spermiogenesis does not. • The number of cells is drastically increased in spermatogenesis, but there is no change in the number of cells after spermiogenesis. • Specialization and maturation of sperms take place in spermiogenesis, but not in other steps of the spermatogenesis. • Spermatogenesis does not change the shape of the cells except in spermiogenesis.