Testicle fetal abdomen to the inguinal ring and beyond to the inguinal canal and into the scrotum. In most cases (97% full-term, 70% preterm), both testes have descended by birth. In most other cases, only one testis fails to descend (cryptorchidism) and that will probably express itself within a year. The testes grow in response to the start of spermatogenesis. Size depends on lytic function, sperm production (amount of spermatogenesis present in testis), interstitial fluid, and Sertoli cell fluid production. After puberty, the volume of the testes can be increased by over 500% as compared to the pre-pubertal size. Testicles are
Cello scrotum this and other hoax medical letters for evidence-based medicine and public understanding of science were discussed by Séamus Mac Suibhne. Cello scrotum Cello scrotum is a hoax medical condition originally published as a brief case report in the "British Medical Journal" in 1974. As its name suggests, it was purportedly an affliction of the scrotum affecting male players of the cello. The original letter was written by Dr Elaine Murphy but signed by her husband John as a joke to compare with a previous letter regarding 'guitar nipple', a condition reportedly occurring when some styles of guitar playing excessively irritate