The sperm complete their development in the epididymis.
No sperm isn't impacting your muscle development.
The gametes, or "sex cells" - the sperm and ovum (egg) - become the fertilized egg (zygote) when they fuse.
The zygote is formed in the fallopian tube after fertilization of the egg by sperm. It is the initial stage of embryonic development where the genetic material from both the egg and sperm combine to form a single cell with a complete set of chromosomes.
gonadotropins
the role of testes are to make sperm.
Around your mid 12. During Puberty a boy will start to produce sperm.
Sperm begin development in the seminiferous tubules of the testes, where spermatogenesis occurs. They then mature in the epididymis, a coiled tube located on the back of each testicle.
Prenatal development actually begins when the first initial cells divide. Development continues daily until the baby is born. There are differing opinions about this and it is somewhat subject to debate.
The cell formed by the sperm and the ovum is called a zygote. It is the earliest stage of human development and contains the complete set of genetic information from both parents. The zygote then undergoes cell division to form an embryo, which eventually develops into a fetus.
sperm to sperms cells
To learn more on sperm and its development check out en.wikipedia.org/wiki/Sperm
At the end of meiosis, there are four sperm cells.