urethra

The fibromuscular tubular canal through which urine is discharged from the bladder to the exterior via the external urinary meatus; in males, the urethra is joined by the ejaculatory ducts and serves as a passageway for semen during ejaculation, as well as a canal for urine during voiding; in females, the urethra is shorter and emerges above the vaginal opening.

Tür Muscle
Vücut Sistemi Urinary
Ana Yapı organ
FMA ID 19667

Alt Yapılar

male urethra Organ female urethra Organ

Sıkça Sorulan Sorular

How does the urethra differ between males and females?
The female urethra is approximately 3–4 cm long, runs from the bladder neck to the external urethral meatus (in the vestibule of the vulva), and carries only urine. The male urethra is approximately 20 cm long and is divided into four sections: prostatic (passing through the prostate), membranous (through the external sphincter), bulbous, and penile (spongy). The male urethra serves dual functions — conveying urine and, during ejaculation, semen.
What sphincters control urethral flow?
Two sphincters regulate urinary flow through the urethra. The internal urethral sphincter is formed by smooth muscle at the bladder neck and is under involuntary (autonomic) control — it automatically closes to maintain continence. The external urethral sphincter is composed of striated skeletal muscle surrounding the urethra and is under voluntary control, allowing conscious delay of urination.
What conditions commonly affect the urethra?
Urethritis — inflammation of the urethra — is most commonly caused by sexually transmitted infections such as gonorrhea (Neisseria gonorrhoeae) and chlamydia (Chlamydia trachomatis). Urethral strictures (scarring that narrows the lumen) cause obstructed flow. In older men, benign prostatic hyperplasia compresses the prostatic urethra, causing lower urinary tract symptoms. Urethral injuries can occur with pelvic fractures or catheterization trauma.

İlgili Yapılar

primitive urogenital sinus fetal UGS prostate field prostate primordium renal pelvis kidney pelvis renal pelvis/ureter renal pelvis and ureter renal tubule renal tubule (generic) allantois of embryonic urinary system allantois cloacal membrane embryonic cloacal membrane basal cell layer of urothelium basal cell layer of uroepithelium

Tıbbi Sorumluluk Reddi

Bu içerik yalnızca eğitim ve bilgilendirme amaçlıdır. Profesyonel tıbbi tavsiye, tanı veya tedavinin yerini tutması amacıyla hazırlanmamıştır. Bir tıbbi duruma ilişkin sorularınız için her zaman doktorunuzun veya diğer nitelikli sağlık hizmeti sağlayıcısının tavsiyesini alın. Bu web sitesinde okuduğunuz bir şey nedeniyle profesyonel tıbbi tavsiyeyi asla göz ardı etmeyin veya geciktirmeyin.

Educational Disclaimer

This content is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for medical decisions.

Data sources: Terminologia Anatomica, Foundational Model of Anatomy, Wikidata.