The term "arteria perinealis" refers to the arterial blood vessel that passes through the perineum, which is the area between the anus and the external genitals. There are several synonyms for this term, including the perineal artery, which is the most commonly used synonym. Other synonyms include the superficial perineal artery, the perineo-scrotal artery, and the dorsal artery of the penis or clitoris. These arteries are responsible for supplying blood to the perineum, which is an important area of the body that houses many critical structures, including the urethra, anus, and reproductive organs.