Primary urethral groove

Last updated
Primary urethral groove
Details
Precursor Urogenital folds
Gives rise to Urethra
Identifiers
Latin sulcus urethralis primarius
TE urethral groove_by_E5.6.4.2.1.7.3 E5.6.4.2.1.7.3
Anatomical terminology

The primary urethral groove or urethral groove is a temporary linear indentation on the underside (ventral side) of the male penis during embryonic development.

In humans, it typically appears around eight weeks of gestation and becomes closed into a normal male urethra by the twelfth week.

Clinical significance

Failure of complete closure can be associated with hypospadias. [1]

Related Research Articles

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The urethra is a tube that connects the mammalian urinary bladder to the urinary meatus. Male and female placental mammals release urine through the urethra during urination, but males also release semen through the urethra during ejaculation.

<span class="mw-page-title-main">Urethral stricture</span> Medical condition

A urethral stricture is a narrowing of the urethra, the tube connected to the bladder that allows the passing of urine. The narrowing reduces the flow of urine and makes it more difficult or even painful to empty the bladder.

<span class="mw-page-title-main">Hypospadias</span> Medical condition

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Urethral sounding is the practice of inserting objects into the urethra for sexual gratification. Urethral dilatation is a urological procedure that uses probes called sounds to enlarge the inside diameter of the urethra and locate obstructions in the urethra, or as a treatment for urethral strictures.

<span class="mw-page-title-main">Corpus spongiosum (penis)</span> Spongy tissue within the human penis

The corpus spongiosum is the mass of spongy tissue surrounding the male urethra within the penis. It is also called the corpus cavernosum urethrae in older texts.

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The male reproductive system consists of a number of sex organs that play a role in the process of human reproduction. These organs are located on the outside of the body, and within the pelvis.

The urethral or periurethral glands are glands that branch off the wall of the urethra of mammals. The glands secrete mucus and are most numerous in the section of the urethra that runs through the penis. Urethral glands produce a colloid secretion containing glycosaminoglycans; this secretion protects the epithelium against urine.

<span class="mw-page-title-main">Urethral artery</span> Artery

The urethral artery arises from the internal pudendal artery a branch of the internal iliac artery. The internal pudendal artery has numerous branches including the artery of the bulb of the penis immediately before the urethral and the dorsal artery of the penis more distally.

<span class="mw-page-title-main">Northern red-sided opossum</span> Species of marsupial

The northern red-sided opossum or the Guianan short-tailed opossum, Monodelphis brevicaudata, is an opossum species from South America. It is found in Bolivia, Brazil. French Guiana, Guyana, Suriname and Venezuela.

<span class="mw-page-title-main">Spongy urethra</span> Part of the male urethra

The spongy urethra is the longest part of the male urethra, and is contained in the corpus spongiosum of the penis.

<span class="mw-page-title-main">Urethral crest</span>

The urethral crest is an anatomical feature present in the urinary system of both males and females.

<span class="mw-page-title-main">Lacuna magna</span>

In male anatomy, the lacuna magna is the largest of several recesses in the roof of the navicular fossa of the male urethra.

<span class="mw-page-title-main">Urinary meatus</span> Orifice of the urethra

The urinary meatus, also known as the external urethral orifice, is the opening where urine exits the male and female urethra. It is where semen also exits the male urethra. The meatus has varying degrees of sensitivity to touch.

The development of the reproductive system is the part of embryonic growth that results in the sex organs and contributes to sexual differentiation. Due to its large overlap with development of the urinary system, the two systems are typically described together as the genitourinary system.

<span class="mw-page-title-main">Urethral sphincters</span> Muscles keeping urine in the bladder

The urethral sphincters are two muscles used to control the exit of urine in the urinary bladder through the urethra. The two muscles are either the male or female external urethral sphincter and the internal urethral sphincter. When either of these muscles contracts, the urethra is sealed shut.

<span class="mw-page-title-main">Retrograde urethrogram</span> Medical imaging of the urethra

A retrograde urethrography is a routine radiologic procedure used to image the integrity of the urethra. Hence a retrograde urethrogram is essential for diagnosis of urethral injury, or urethral stricture.

<span class="mw-page-title-main">Body of penis</span> Part of the penis located outside of the pelvic cavity

The body or shaft of the penis is the free portion of the human penis that is located outside of the pelvic cavity. It is the continuation of the internal root, which is embedded in the pelvis and extends to the glans. It is made up of the two corpora cavernosa and the corpus spongiosum on the underside. The corpora cavernosa are intimately bound to one another with a dorsally fenestrated septum, which becomes a complete one before the penile crura. The body of the penis is homologous to the female clitoral body.

<span class="mw-page-title-main">Urethral intercourse</span> Sexual penetration of the female urethra

Urethral intercourse or coitus par urethra is sexual penetration of the female urethra by an object such as a penis or a finger. It is not to be confused with urethral sounding, the act of inserting a specialized medical tool into the urethra as a form of sexual or fetishistic activity.

References

  1. Holland AJ, Smith GH (August 2000). "Effect of the depth and width of the urethral plate on tubularized incised plate urethroplasty". J. Urol. 164 (2): 489–91. doi:10.1016/S0022-5347(05)67408-3. PMID   10893631.