part_of starts_at ends_at genital tubercle urethral plate epithelium EMAPA:31518 anatomical_structure urethral plate The urethral plate epithelium (upe) (syn: urethral plate) (TS:19) is a bilaminar epithelial extension of the cloacal epithelium that grows out from the cloaca, between the ventrolateral genital swellings. Derived from cloacal endoderm. This bilayered epithelium often called the urethral plate, marked by Shh, continues to grow distally with the genital tubercle. At TS:19 is part of the genital tubercle and from TS:20 as the ontology becomes gender-specific it becomes part of the genital tubercle of male/female and from TS:21 it is also part of the phallic urethra epithelium, which is part of genital tubercle of male/female and part of the phallic urethra. reproductive system epithelium TS19 TS26