Patient's question:
I have never been pregnant. I went to the hospital for a check-up, and the doctor recommended an ultrasound to monitor ovulation. I'm curious, how big is sperm exactly?Doctor's answer:
The normal color of semen is white or grayish-white, and it can turn pale yellow if not ejaculated for a long time. Prostatitis can cause changes in semen color, while seminal vesiculitis can cause blood in the semen. The head of the sperm is 3.5-5.0 micrometers long and 2.0-3.0 micrometers wide, with a regular oval shape. The body of the sperm is 5-7.0 micrometers long and 1.0 micrometer wide. The tail of the sperm is 45 micrometers long. It is not possible to distinguish clearly with the naked eye.