An appendix testis is very small, typically seven to 11 millimeters long. The appendix testis looks like a small blob of tissue. You cannot see it because it’s located on the testis under your skin.

People with male reproductive anatomy usually have two testicles (testes), commonly called balls. The function of testicles is to produce sperm and testosterone, which is a male sex hormone. These ...

An undescended testis occurs when a testis never moved down in to the scrotum as the male developed, or moves back up out of the scrotum and into the abdomen where it started.

Torsion occurs when the testis spins, twisting the spermatic cord, causing reduced blood flow and testicular damage. Timely surgery may be needed to save the testis.

In boys with undescended testis, the risk of developing infertility is traditionally predicted based on a decrease in germ cell count observed using testicular biopsy samples. However, the process ...

Share on Pinterest Researchers have found microplastics in every sample of human and dog testicles they tested in a new study. Image credit: Jovana Milanko/Stocksy. Multiple factors contribute to ...