Which organ is associated with the prefix "orchido-"?

The prefix "orchido-" is derived from the Greek word "orchis," meaning testis or testicle. This prefix is specifically associated with the male reproductive system, indicating anything related to the testes. Therefore, when this prefix is used in medical terminology, it typically pertains to conditions, surgeries, or anatomical references involving the testes.

Understanding this prefix is crucial for comprehending various medical terms, such as "orchidectomy," which refers to the surgical removal of one or both testicles. The connection of this prefix to the testis highlights its specificity and relevance in male reproductive health. Other options listed do not relate to this prefix's meaning, with terms related to skin, uterus, and bones stemming from entirely different roots in medical terminology.