Washington Master Esthetics Practice Exam

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What is the plural form of vas?

Vesses
Vasculae
Vasa
Vessels

The correct answer is: Vasa

The plural form of "vas" is "vasa." In medical terminology, "vas" refers to a vessel, often in the context of blood vessels or ducts within the body. The term derives from Latin, where it follows a specific pattern for pluralization. In this case, the ending “-as” changes to “-a,” which is a common transformation in Latin-derived medical terms. Understanding this etymology and its rule can often help in deciphering similar terms. For instance, "vessels" simply refers to the general term for different types of containers or tubes, and while “vasculae” may sound like a possible plural form, it is not used correctly in this context. Therefore, "vasa" is recognized as the accurate pluralization of "vas" in anatomical terminology.