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Female Urethra

Definition

It is a tube which passes the urine from the urinary bladder to the exterior and is situated anterior to the vagina

1 1/2-2 inches (3-5 cm) long

Opens in the vulva between the clitoris and the vaginal opening

Extension

Extends from the internal to the external urethral orifice.

It is placed behind the symphysis pubis, imbedded in the anterior wall of the vagina

Passes obliquely downward and forward

Slightly curved with the concavity directed forward

Structure

Lining of stratified squamous epithelium, which becomes transitional near the bladder

The urethra consists of three coats

Muscular layer

Erectile layer

Mucous

The muscular layer being a continuation of that of the bladder.

Relations

Between the superior and inferior fascia of the urogenital diaphragm, the female urethra is surrounded by the Sphincter urethae.

Nerve supply

Somatic innervation of the external urethral sphincter - pudendal nerve

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