: Approximately 18–22 cm long, it is divided into four main sections: pre-prostatic, prostatic (widest), membranous (narrowest), and spongy/penile (longest). Beyond carrying urine, it is a vital part of the reproductive system , transporting semen during ejaculation.
The urethra's structure is specialized for both storage (continence) and voiding (urination).
: Significantly shorter at about 4 cm (1.5 inches). It is located in front of the vagina and opens at the vestibule. Its primary role is solely the transport of urine.
The is a thin, fibromuscular tube that serves as the final conduit for urine to leave the body from the bladder. While its primary function is common to all, its anatomy and additional roles vary significantly between sexes. Anatomical & Functional Review
