font size

Definition of Yolk stalk

Yolk stalk: A narrow tube present in the early embryo that connects the midgut of the embryo to the yolk sac outside the embryo through the umbilical opening. Later in development, the yolk stalk is usually obliterated, but a remnant of it may persist: most commonly as a finger-like protrusion from the small intestine known as Meckelis diverticulum. Found in 2 to 4 percent of people, Meckelis diverticulum may become inflamed (much like the appendix) and require surgical removal. Also known as the omphalomesenteric duct, umbilical duct, or vitelline duct.

Source: MedTerms™ Medical Dictionary
http://www.medicinenet.com/script/main/art.asp?articlekey=6064
Last Editorial Review: 6/14/2012

Drug Medical Dictionary of Terms by Letter

Top RxList Drug News

Parenting and Pregnancy

Get tips for baby and you.

advertisement
advertisement
Use Pill Finder Find it Now See Interactions

Pill Identifier on RxList

  • quick, easy,
    pill identification

Find a Local Pharmacy

  • including 24 hour, pharmacies

Interaction Checker

  • Check potential drug interactions
Search the Medical Dictionary for Health Definitions & Medical Abbreviations