The urethra is the tube carrying urine from the bladder to the outside. This duct is shorter in women and consists, in man, of three parts: prostatic, membranous and spongy. It also carries sperm from the seminal vesicles.
The term urethra is close to that of designating the lead bilateral ureter (one on each side) carrying urine from the kidneys to the bladder.
The urethra is likely to be the seat of many diseases (not exhaustive):First, it is the infections that are the most common sexually transmitted and usually this is the case among other gonococcal urethritis (also known as gonorrhea)The narrowing of the urethra and its meatus is the result of inflammation of the urethra duct, or trauma of the penis or urethra directly, ie by iatrogenic manipulation (to perform treatment) or accidental (manipulation of a sexual nature).The expansion of part of the urethra is called urétrocèle and concerns mainly the female.Urethritis in the inclusions is a sexually transmitted infection caused by Chlamydia trachomatis which is part of sexually transmitted diseases the most common. Estimated to affect 1 million people in France every year. This germ is considered both a virus and bacteria.The shift of the mucosa (cell layer) that covers the inside of the urethral meatus is called prolapse, also known urétrocèle. This is most often a benign condition seen in older women. The urétrocèle, accompanied by dilatation of the urethra, protrudes into the vagina in the form of a size more or less generally the size of a walnut. Sometimes this is the first degree of vaginal cystocele.Tumors of the urethra are relatively rare, they have a serious development.Congenital malformations of the urethra are hypospadias and epispadias corresponding to defects in which the urethral opening is not in its normal place at the glans, the urethral valve works normally and sometimes his presence at the urethra prevents the normal passage of urine. Also in regard to birth defects, it should also include the Prune Belly syndrome in which the posterior portion of the urethra is widened. The mega-urethra, very rare anomaly, resulting in a fusiform dilation and overall penile urethra (penis), it is due to a partial or total absence of the corpus spongiosum and cavernosa, unimpeded distal.The term anaspadias, from the Greek ana: ano and OSPCA: I divide, in English it means erased the malformation of the urethra with a meatus opens on the dorsal surface of the glans or penis.The urethral polyp is a rare anomaly manifested by one or more impossibilities to urinate (urinary blockage intermittent), associated with hematuria (blood in urine) or other urinary symptoms.The urétrorragie means bleeding from the urethra. This type of condition is usually due to urethral manipulation (masturbatory purposes in the girl) or occur as a result of trauma (accident sports: cycling, gymnastics, etc ...)