Final answer:
Sperm production in males, called spermatogenesis, continues throughout their adult lives. A young, healthy male can produce hundreds of millions of sperm per day, although only about half of them are likely to become mature. This process occurs in the seminiferous tubules in the testes and involves the production, maturation, and delivery of sperm.
Step-by-step explanation:
Sperm production in males typically continues uninterrupted until death, although a decrease in sperm production generally occurs at older age. A young, healthy male may produce hundreds of millions of sperm a day. Only about half of these, however, are likely to become viable, mature sperm.
Sperm production, referred to as spermatogenesis, occurs in the seminiferous tubules in the testes. These tubules constantly produce sperm throughout a man's life. One production cycle, from spermatogonia to formed sperm, takes approximately 64 days. A new cycle starts approximately every 16 days. The total number of sperm a person produces, known as sperm counts, slowly decline after age 35.
During ejaculation, sperm exit the epididymis and travel through the ductus deferens and the ejaculatory duct. The fluid secreted by the seminal vesicle and prostate combine to form semen, which helps the sperm travel through the urethra and into the female reproductive tract.
Adult males continue to produce sperm through a process called spermatogenesis, starting at puberty and potentially lasting a lifetime. This cycle of sperm development takes roughly 64 days and begins anew every 16 days. Although testosterone and sperm counts may decrease with age, men can remain fertile well into older adulthood.
Males continue to produce sperm through their adult lives via a process called spermatogenesis, which occurs in the seminiferous tubules of the testes. This process begins at puberty and involves the mitotic division of spermatogonia (stem cells), which then undergo meiosis to eventually form spermatozoa, or mature sperm cells. While the sperm production cycle takes approximately 64 days, with a new cycle starting every 16 days, testosterone levels and sperm counts do tend to decline with age, particularly after age 35. Even so, sperm production usually continues uninterrupted throughout a man's life, enabling the possibility of fatherhood well into old age. Sperm are moved to the epididymis where they continue to mature before ejaculation, at which point they travel through the ductus deferens and are joined by seminal vesicle secretions to form semen, which is further fortified with secretions from the prostate and bulbourethral glands.