The seminal vesicle is a single, tubular outpouching of the vas deferens. Because this tube is coiled, a sectioned specimen typically shows several similar profiles (as above). The thick wall is muscular, and the mucosa is highly folded for greatly increased secretory surface area. The illustration here is a non-human specimen from our reference set -- human seminal vesicle normally displays a much more elaborately folded mucosa, appearing more like a honey-comb; see Webpath low X, Webpath high X.
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Last updated: 5 February 2023 / dgk