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Urachus

Index Urachus

The urachus is a fibrous remnant of the allantois, a canal that drains the urinary bladder of the fetus that joins and runs within the umbilical cord. [1]

19 relations: Allantois, IgG4-related disease, Median umbilical ligament, Mesonephric duct, Navel, Peritoneum, Prostatic urethra, Renal calyx, Retropubic space, S&P Global, Transversalis fascia, Trigone of urinary bladder, Umbilical cord, Umbilical-urachal sinus, Urachal cancer, Urachal cyst, Urachal fistula, Urinary bladder, Urogenital sinus.

Allantois

The allantois (plural allantoides or allantoises) is a hollow sac-like structure filled with clear fluid that forms part of a developing amniote's conceptus (which consists of all embryonic and extra-embryonic tissues).

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IgG4-related disease

IgG4-related disease (IgG4-RD), formerly known as IgG4-related systemic disease, is a chronic inflammatory condition characterized by tissue infiltration with lymphocytes and IgG4-secreting plasma cells, various degrees of fibrosis (scarring) and a usually prompt response to oral steroids.

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Median umbilical ligament

The median umbilical ligament (or Xander's ligament is a structure in human anatomy. It is a shrivelled piece of tissue that represents the remnant of the embryonic urachus. It extends from the apex of the bladder to the umbilicus, on the deep surface of the anterior abdominal wall. It is unpaired. It is covered by the median umbilical fold Lateral to this structure are the medial umbilical ligament (which is a different structure, not to be confused) and the lateral umbilical ligament.

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Mesonephric duct

The mesonephric duct (also known as the Wolffian duct, archinephric duct, Leydig's duct or nephric duct) is a paired organ found in mammals including humans during embryogenesis.

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Navel

The navel (clinically known as the umbilicus, colloquially known as the belly button, or tummy button) is a hollowed or sometimes raised area on the abdomen at the attachment site of the umbilical cord.

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Peritoneum

The peritoneum is the serous membrane that forms the lining of the abdominal cavity or coelom in amniotes and some invertebrates, such as annelids.

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Prostatic urethra

The prostatic urethra, the widest and most dilatable part of the urethra canal, is about 3 cm long.

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Renal calyx

The renal calyces are chambers of the kidney through which urine passes.

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Retropubic space

Retropubic space is the extraperitoneal space between the pubic symphysis and the urinary bladder.

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S&P Global

S&P Global Inc. (prior to April 2016 McGraw Hill Financial, Inc., and prior to 2013 McGraw Hill Companies) is an American publicly traded corporation headquartered in New York City.

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Transversalis fascia

The transversalis fascia (or transverse fascia) is a thin aponeurotic membrane which lies between the inner surface of the transverse abdominal muscle and the parietal peritoneum.

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Trigone of urinary bladder

The trigone (a.k.a. vesical trigone) is a smooth triangular region of the internal urinary bladder formed by the two ureteric orifices and the internal urethral orifice.

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Umbilical cord

In placental mammals, the umbilical cord (also called the navel string, birth cord or funiculus umbilicalis) is a conduit between the developing embryo or fetus and the placenta.

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Umbilical-urachal sinus

Umbilical-urachal sinus or Urachal sinus is a congenital anomalies of the urinary bladder caused by failure of obliteration of proximal or distal part of allantois, and the presentation of this anomaly is commoner in children and rare in adult.

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Urachal cancer

Urachal cancer is a very rare type of cancer arising from the urachus or its remnants.

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Urachal cyst

A urachal cyst is a sinus remaining from the allantois during embryogenesis.

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Urachal fistula

A urachal fistula is a congenital disorder caused by the persistence of the allantois (later, urachus), the structure that connects an embryo's bladder to the yolk sac.

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Urinary bladder

The urinary bladder is a hollow muscular organ in humans and some other animals that collects and stores urine from the kidneys before disposal by urination.

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Urogenital sinus

The urogenital sinus is a part of the human body only present in the development of the urinary and reproductive organs.

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References

[1] https://en.wikipedia.org/wiki/Urachus

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