Читать книгу Sex For Dummies - Pierre Lehu A., Dr. Ruth K. Westheimer - Страница 46

If you go back to Figure 2-5, you see that the sperm’s next stop on their voyage is the vas deferens, a tube that ejects the sperm into the urethra, through which semen and urine pass. In the urethra, the sperm are mixed with fluids from the seminal vesicles and the prostate (which I discuss in more detail later in the “The Prostate Gland” section); then they make their way out into the world through ejaculation.

The combination of these fluids and the sperm is called semen. The amount of semen ejaculated during orgasm is generally around a teaspoonful, though it varies depending on when the man last ejaculated. The semen is whitish in color, has a distinctive smell, and is thick when it first comes out. Sperm only comprise about 5 to 10 percent of the volume, but they are the only part of the semen that can cause pregnancy.