Definition

Noun: * A specific smooth muscle structure: The musculus sphincter ductus pancreatici is the anatomical term for the band of smooth muscle that surrounds and controls the opening of the main pancreatic duct, typically where it enters the duodenum (the first part of the small intestine). Its function is to regulate the flow of pancreatic juices into the digestive tract.

Usage Notes

• This is a highly specialized anatomical and medical term. It is almost exclusively used in formal scientific, medical, or educational contexts such as textbooks, research papers, and clinical discussions.
• It is a Latin-derived term, following the convention for naming anatomical structures ( = muscle, = sphincter, = duct, = of the pancreas).
• In everyday conversation or even general medical practice, a more descriptive phrase like "the sphincter of the pancreatic duct" is often used instead.

Examples of Usage

• In an anatomy textbook: "The prevents the reflux of duodenal contents into the pancreatic duct."
• In a surgical report: "The procedure required careful dissection to identify and preserve the integrity of the ."
• In a medical lecture: "Dysfunction of the can be a factor in recurrent pancreatitis."

Advanced Usage

• This term is a component in the discussion of the hepatopancreatic ampulla (or Ampulla of Vater), a common chamber where the pancreatic duct and common bile duct often join before emptying into the duodenum. The smooth muscle surrounding this ampulla is the , which is a related but distinct complex that may incorporate the .

Variants and Related Words

• Sphincter of the pancreatic duct: The common descriptive English equivalent.
• Pancreatic duct sphincter: A simplified variant.
• Sphincter of Oddi: A related but broader term for the muscular valve controlling the flow of bile and pancreatic juice.
• Smooth muscle sphincter: The general type of tissue and structure.

Synonyms

• Pancreatic duct sphincter (functional synonym in non-technical language).

Related Phrases / Terms

• Main pancreatic duct: The duct that this sphincter controls.
• Sphincter mechanism: Refers to the general physiological function of such muscular rings.
• Duodenal papilla: The nipple-like projection where the pancreatic duct (often alongside the bile duct) opens into the duodenum.

Noun

1. the smooth muscle sphincter of the main pancreatic duct