Sperm gets ejected from the penis, enters the vagina, and swims up the reproductive tract until they reach the egg to fertilize it. Barely years ago, it was considered a major scientific breakthrough when scientists came up with the idea that a fully formed, tiny human inhabited the head of each sperm — totally debunked and untrue. Fortunately, as the human body has evolved over thousands of years to maximize fertility potential, so has our scientific understanding about sperm. But many of us still believe some pretty unscientific, long-standing sperm myths. Here are twelve of the most common ones. Sperm swim like Olympic athletes The common tale is that millions — anywhere from 20 to million , to be precise — of heroic sperm swim in competition with each other to be the lucky little swimmer that penetrates the egg.
Answer Chris - This is a very good question; healthy testes make sperm at the rate of between and sperm cells per second. These collect in a long coil of tubes above and behind each testicle called the epididymis, where they are stored until needed. The testes hang external to the body within the scrotum to achieve an optimal temperature for sperm production. This is because sperm are made most efficiently at a slightly lower temperature than body temperature. In the epididymis the sperm are nourished and make their way to the vas deferens, which is a muscular tube connecting the testis to the urethra up inside the male body. When sperm are ejaculated they are pushed along the vas deferens by rhythmic contractions of the musculature. Once inside the body, secretions from the prostate gland and seminal vesicles are added, producing the semen that is ejaculated from the penis.
A more accurate break down is 40 percent female factor, 40 percent male factor, 10 percent combined, and 10 percent unknown. Sperm quantity and quality can be negatively affected by many different environmental and lifestyle factors. In a recent Romper article , the power of seminal fluid was discussed, as well as the question: can sperm go bad? Causes of Decreased Male Fertility Sperm production and maturation is a dynamic, ongoing process for most men.
Of course, for this to happen there has to be something to all of this concern. So, are older sperm really worse? Worries about aging sperm — or, more accurately, sperm from aging men — are the same as the concerns about aging eggs: decrease in fertility, and increase in genetic problems and psychiatric and behavior disorders among offspring.