Definition

Noun (plural: posterior labial veins) * Anatomy: A set of veins located in the female external genitalia (vulva). Specifically, these are veins that drain blood from the posterior (rear) parts of the labia majora (the outer folds of skin) and transport it back toward the body's central circulation via the internal pudendal vein.

Usage Notes

• This is a highly specific anatomical term used primarily in medical, biological, and healthcare contexts.
• It is almost always used in its plural form ("posterior labial veins") because the structure is typically a paired set, one on each side of the body.
• The term is descriptive of both location ("posterior labial") and function ("veins").

Examples

• In an anatomy textbook: "The posterior labial veins drain the posterior parts of the vulva."
• In a medical report: "The examination noted no varicosities in the posterior labial veins."
• In a surgical context: "Care was taken to avoid the posterior labial veins during the procedure."

Advanced Usage

• The posterior labial veins are part of the venous drainage system of the perineum. They are tributaries that ultimately feed into the internal iliac vein via the internal pudendal vein.

Variants and Related Words

• Labial veins: A broader term that can refer to either the anterior or posterior sets of veins in the labia.
• Internal pudendal vein: The larger vein into which the posterior labial veins drain.
• Venous plexus: A network of interconnected veins. The labial veins are often part of a broader venous plexus in the region.

Synonyms

• There are no direct common-language synonyms for this precise anatomical structure. In non-technical descriptions, one might refer generally to "veins in the labia" or "vulvar veins," but these are not exact synonyms.

Antonyms

• Anterior labial veins: The set of veins that drain the anterior (front) parts of the labia majora.
• Arteries (in this context, specifically the posterior labial arteries): Vessels that carry blood the tissue, as opposed to veins which carry blood from it.

Related Phrases / Compound Terms

• Venous drainage of the vulva: The overall system of which the posterior labial veins are a component.
• Perineal veins: A related category of veins in the same general anatomical region.

Noun

1. veins that pass posterior from the labia majora to the internal pudendal vein