If a man cannot release or make healthy sperm naturally, this medical procedure may be recommended for fertility reasons to enable the man to father a child. The testicular tissue is found in the two testes, where the sperm is made. The testes are found inside the scrotum, the small sac behind and under the penis. Infertility is a disease of the reproductive system that makes it difficult for the body to perform the basics of reproduction. It affects both men and women. Most infertility cases are treated with medication or surgery.
Normal sperm count: Everything you need to know
Normal sperm count: A guide to semen analysis
Microscopic Testicular Sperm Extraction
By Jessica Hamzelou. How are the little swimmers doing? Men often find it embarrassing to provide a semen sample at a clinic, says Yoshitomo Kobori of the Dokkyo Medical University Koshigaya Hospital in Japan. So Kobori devised an alternative.
Sperm is the male reproductive cell. In the types of sexual reproduction known as anisogamy and its subtype oogamy , there is a marked difference in the size of the gametes with the smaller one being termed the "male" or sperm cell. A uniflagellar sperm cell that is motile is referred to as a spermatozoon , whereas a non-motile sperm cell is referred to as a spermatium. Sperm cells cannot divide and have a limited life span, but after fusion with egg cells during fertilization, a new organism begins developing, starting as a totipotent zygote. The human sperm cell is haploid , so that its 23 chromosomes can join the 23 chromosomes of the female egg to form a diploid cell.