| urogenital s. |
an elongated sac formed by division of the cloaca in the early embryo, communicating with the mesonephric ducts and bladder; it forms the vestibule, urethra, and vagina in the female and some of the urethra in the male.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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