युरेथ्रा

विकिपिडिया नं
थन झासँ: navigation, मालादिसँ
युरेथ्रा
Male anatomy.png
मिजं एनाटोमी। (Urethra opening labeled at bottom left, the bulbo-urethral gland at the base of the penis.)
लातिन मिसा युरेथ्रा: urethra feminina
मिजं युरेथ्रा: urethra masculina
Gray's subject #256 1234
प्रिकर्सर युरोजेनाइटल साइनस
MeSH urethra

युरेथ्रा (युनानी ουρήθρα - ओउरेथ्रा) छगू धों ख। थ्व धों नं युरिनरी ब्लाडरयात म्ह स्वया पिनेनाप स्वाइ। युरेथ्राया ज्या निगु हे लिंगय् च्व फायेगु व मिजंय् सेमेन पिहां छ्वेगु ख।


एनाटोमी[सम्पादन]

मिसा युरेथ्रा[सम्पादन]

मिसामनुय् युरेथ्रा १ १/२ निसें २ इञ्च (३-५ सेमि)तक्कया जुइ। थुकिया एक्स्टर्नल ओपनिङ क्लाइटोरिसभजाइनाया दथुइ जुइ। थ्व सिम्फाइसिस प्युबिसया ल्युने दै व एन्टेरियर भजाइनल वालय् एम्बेडेड जुइ। थुकिया दिशा अब्लिक्ली क्वे व न्ह्यःने जुइ। मिसा युरेथ्रा भतिचा कर्भ्ड जुइ व थुकिया कर्भेचर न्ह्यःने स्वयाच्वंगु जुइ।

मिजं युरेथ्रा[सम्पादन]

मिजंमनुतेगु युरेथ्राया हाकः ८ इञ्च (१७.५-२० सेमि) जुइ। थ्व पेनिसया अन्त्यं पिनेनाप कम्युनिकेट याइ। युरेथ्रां च्व व सेमेनया निकास याइ।

मिजंतेगु युरेथ्रायात ४गु भागय् बायेछिं :

क्षेत्र वर्णन इपिथेलियम
प्रि-प्रोस्टाटिक युरेथ्रा This is the intramural part of the urethra and varies between 0.5 and 1.5 cm in length depending the fullness of the bladder. Transitional
प्रोस्टाटिक युरेथ्रा Crosses through the prostate gland. There are several openings: (1) the ejaculatory duct receives sperm from the vas deferens and ejaculate fluid from the seminal vesicle , (2) several prostatic ducts where fluid from the prostate enters and contributes to the ejaculate, (3) the prostatic utricle, which is merely an indentation. These openings are collectively called the verumontanum. Transitional
मेम्ब्रेनस युरेथ्रा A small (1 or 2 cm) portion passing through the external urethral sphincter. This is the narrowest part of the urethra. It is located in the deep perineal pouch. The ducts of the bulbourethral glands (Cowper's gland) enter here. Pseudostratified columnar
पेनाइल युरेथ्रा Runs along the length of the penis on its ventral (underneath) surface. It is about 15-16 cm in length, and travels through the corpus spongiosum. The ducts from the urethral gland (gland of Littre) enter here. Some textbooks will subdivide the spongy urethra into two parts, the bulbous and pendulous urethra. Pseudostratified columnar - proximally, Stratified squamous - distally

The length of a male's urethra, and the fact it contains a prominent bend, makes catheterization more difficult.

हिस्टोलोजी[सम्पादन]

The epithelium of the urethra starts off as transitional cells as it exits the bladder. Further along the urethra there are stratified columnar cells, then stratified squamous cells near the external meatus (exit hole).

There are small mucus-secreting urethral glands, that help protect the epithelium from the corrosive urine.

Medical problems of the urethra[सम्पादन]

  • Hypospadias and epispadias are forms of abnormal development of the urethra in the male, where the meatus is not located at the distal end of the penis (it occurs lower than normal with hypospadias, and higher with epispadias). In a severe chordee, the urethra can develop between the penis and the scrotum.
  • Infection of the urethra is urethritis, said to be more common in females than males. Urethritis is a common cause of dysuria (pain when urinating).
  • Related to urethritis is so called urethral syndrome
  • Passage of kidney stones through the urethra can be painful and subsequently it can lead to urethral strictures.

Endoscopy of the bladder via the urethra is called cystoscopy.

  • Foreign bodies in the urethra are uncommon, but there have been medical case reports of self-inflicted injuries a result of insertion of foreign bodies into the urethra such as an electrical wire [१].

Sexual physiology[सम्पादन]

The male urethra is the conduit for semen during sexual intercourse. It also serves as a passage for urine to flow.

स्वयादिसँ[सम्पादन]

मेमेगु किपा[सम्पादन]

पिनेया स्वापू[सम्पादन]