Spermatozoa (sperm)
Current as of: December 19, 2018
Author: Healthwise Staff
Medical Review:E. Gregory Thompson, MD - Internal Medicine & Adam Husney, MD - Family Medicine & Avery L. Seifert, MD, FACS - Urology
Spermatozoa (sperm) are the male sex cells that carry a man’s genetic material. They are so tiny that they can’t be seen without a microscope. In a healthy man, one ejaculation usually contains between 40 million and 600 million sperm. Sperm have an oval head, a short middle, and a long tail. They move by whipping their…