Spiral valves of Heister

General Information
Latin	valvulae spirales
Greek
TA98
TA2
FMA
Details
System	Digestive system
Artery
Vein
Nerve
Lymphatic drainage
Precursor	Cystic duct
Function	Regulate bile flow
Identifiers
Clinical significance
Notes

The spiral valves of Heister are anatomical structures located within the cystic duct, which is part of the biliary system. These valves are named after the German anatomist Lorenz Heister, who first described them.

Structure

The spiral valves of Heister are a series of crescent-shaped folds of mucous membrane that line the interior of the cystic duct. These folds are not true valves, as they do not completely close the duct, but they do create a spiral pattern that can help regulate the flow of bile from the gallbladder into the common bile duct.

Function

The primary function of the spiral valves of Heister is to maintain a steady flow of bile, preventing sudden surges or blockages. This is important for the proper digestion of fats in the small intestine. The spiral configuration of the valves also helps to keep the cystic duct open, allowing bile to flow freely even when the gallbladder is not actively contracting.

Clinical significance

The spiral valves of Heister can sometimes be involved in gallstone formation or biliary obstruction. Gallstones may become lodged in the cystic duct, leading to cholecystitis or biliary colic. Understanding the anatomy of these valves is important for surgeons performing cholecystectomy or other procedures involving the biliary system.

History

The spiral valves were first described by Lorenz Heister in the 18th century. Heister was a pioneering anatomist and surgeon, and his work laid the foundation for modern anatomy and surgery.

See also

• Biliary system
• Gallbladder
• Cystic duct
• Common bile duct

References

• Heister, L. (1732). Compendium Anatomicum. Nuremberg: Monath & Kussler.
• Standring, S. (2016). Gray's Anatomy: The Anatomical Basis of Clinical Practice. 41st Edition. Elsevier.

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