Semen is a fluid that carries sperm, or male reproductive cells, out of the body during ejaculation. The average amount of ...

Sperm are male reproductive (sex) cells. The word "sperm" can refer to spermatozoon (singular) or spermatozoa (plural). Sperm are tiny cells with an oval-shaped body and a long tail. They measure just ...

Human reproduction requires both male and female gametes. Gametes are special sex cells that contain the genetic information necessary to create a new life. Men produce millions of gametes called ...

Just like urine and stool, semen can provide important clues about a man’s health. Variations in its color, texture, smell and volume can signal underlying health conditions. Understanding these signs ...

Add Yahoo as a preferred source to see more of our stories on Google. If you were thinking of kicking off tonight’s foreplay with some oral sex for your partner with a penis and planning on swallowing ...

A semen analysis can help your doctor diagnose fertility issues. A sample is looked at under a microscope to see how many sperm cells it contains, how they're shaped, and how well they move. (Photo ...