10325 IUPAC Gold Book - accessory sex organ 10.1351/goldbook.10325 10325 current synonym: secondary sex organ 1 Organ or structure other than the gonads that matures at puberty and assists indirectly in sexual reproduction by nurturing and transporting gametes. In the human female the accessory sex organs include the Fallopian tubes, uterus, vagina, and the external genitalia. In the human male, the accessory sex organs include the epididymis, vas deferens, ejaculatory duct, urethra, seminal vesicles, bulbourethral glands, prostate, and penis. Fallopian tubes https://goldbook.iupac.org/terms/view/10706 bulbourethral glands https://goldbook.iupac.org/terms/view/10479 epididymis https://goldbook.iupac.org/terms/view/10668 gametes https://goldbook.iupac.org/terms/view/10745 gonads https://goldbook.iupac.org/terms/view/10775 prostate https://goldbook.iupac.org/terms/view/11145 puberty https://goldbook.iupac.org/terms/view/11152 seminal vesicles https://goldbook.iupac.org/terms/view/11203 sexual reproduction https://goldbook.iupac.org/terms/view/11217 urethra https://goldbook.iupac.org/terms/view/11343 uterus https://goldbook.iupac.org/terms/view/11350 vagina https://goldbook.iupac.org/terms/view/11352 vas deferens https://goldbook.iupac.org/terms/view/11358 PAC, 2016, 88, 713. 'Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)' on page 715 (https://doi.org/10.1515/pac-2015-1202) https://goldbook.iupac.org/terms/view/10325/html https://goldbook.iupac.org/terms/view/10325/json https://goldbook.iupac.org/terms/view/10325/plain Citation: 'accessory sex organ' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.10325 The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms. If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using. 2026-05-10T06:51:42+00:00