prostate

https://doi.org/10.1351/goldbook.11145

Male exocrine gland whose secretion contributes alkaline fluid to the ejaculate (see ejaculation).

Note: The alkaline environment facilitates sperm transport and prolongs the survival of sperm in the acidic environment of the vagina.
Source:
PAC, 2016, 88, 713. 'Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)' on page 797 (https://doi.org/10.1515/pac-2015-1202)