尿道扩张器

acquired inclusion cyst of urethral epithelium of female

urethral injection

urethral filiform

Contrary Urethral Contrast

urethral ridge

urethral ring

urogenital plate, urethral plate 又称“尿道板”。 指由尿生殖窦内胚层形成的细胞板,以后发育为尿道海绵体部。

urethral syringe