Median umbilical ligament

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Median umbilical ligament

Posterior view of the anterior abdominal wall in its lower half. The peritoneum is in place, and the various cords are shining through. Median umbilical ligament isn't labeled, but it is located just underneath the median umbilical fold, seen in the center of the diagram
Latin	Ligamentum umbilicale medianum, ligamentum suspensorium vesicae urinariae

The median umbilical 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.

Significance

It may be used as a landmark for surgeons who are performing laparoscopy, such as laparoscopic inguinal hernia repair. Other than this, it has no function in a born human and may be cut or removed with impunity.

External links

Median umbilical ligament
- SUNY Figs 36:01-01 - "The inguinal canal and derivation of the layers of the spermatic cord."
- 44:04-0105 at the SUNY Downstate Medical Center - "The Male Pelvis: The Urinary Bladder"
- SUNY Anatomy Image 7576

Median umbilical fold
- SUNY Figs 36:03-12 - "Internal surface of the anterior abdominal wall."

v t e Fetal vascular remnant ligaments (GA 6)

Heart	Ligamentum arteriosum

Liver	Round ligament of liver Ligamentum venosum

Umbilical	Medial umbilical ligament see also Median umbilical ligament and Lateral umbilical fold

Anatomy: urinary system (TA A08, TH H3.06, GA 11.1215)

Abdomen

Kidneys

Layers	Renal fascia Renal capsule Renal cortex Renal column Renal medulla Renal sinus Renal pyramids medullary interstitium Renal lobe Cortical lobule Medullary ray Nephron

Intrarenal arteries	Renal artery Segmental arteries Interlobar arteries Arcuate arteries Interlobular arteries Afferent arterioles

Renal tubule	Renal corpuscle Glomerulus Bowman's capsule Proximal tubule Loop of Henle Descending Thin ascending Thick ascending Distal convoluted tubule Connecting tubule Collecting ducts aka Duct of Belini Renal papilla Minor calyx Major calyx Renal pelvis

Intrarenal veins	Efferent arterioles Peritubular capillaries/Vasa recta Arcuate vein Interlobar veins Renal vein

JGA	Macula densa Juxtaglomerular cells Mesangium/Extraglomerular mesangial cell

Filtration	Glomerular basement membrane Podocyte Filtration slits Mesangium/Intraglomerular mesangial cell Tubular fluid

Ureters

Pelvis

Bladder	Apex Uvula Neck Median umbilical ligament Muscular layer Trigone Detrusor Mucosa Submucosa

Urethra	Urethral sphincters External sphincter muscle of male urethra External sphincter muscle of female urethra Internal sphincter muscle of urethra

M: URI

anat/phys/devp/cell

noco/acba/cong/tumr, sysi/epon, urte

proc/itvp, drug (G4B), blte, urte

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