part_of starts_at ends_at male reproductive system seminal vesicle vesicular seminalis EMAPA:19180 vesicular gland The seminal vesicle (sv) (syn: vesicular gland, vesicular seminalis) (TS:24-TS:28). By E16.5 circulating androgens have initiated seminal vesicle formation in the male, and paired seminal vesicle buds develop from the nephric ducts close to where they have fused with the epithelium of the pelvic urethra of male, at the verumontanum (which develops from the urogenital sinus ridge). Comprised of epithelium, lamina propria, muscle and surrounded by serosa of seminal vesicle. Also contains vasculature (TS:24-TS:28) and nerves are seen from birth (TS:27). Connected to the dorsal anterior pelvic urethra via the ejaculatory duct. Seminal vesicle epithelium is marked by Wnt9b at E17 and seminal vesicle mesenchyme and smooth muscle are marked by Crabp1 at E17 (Abler et al, 2011). Develops from the nephric ducts. anatomical_structure EMAPA:35920 male accessory gland lower urogenital tract of male TS24 TS28