arteriola
Definition
Noun: A very small artery that branches off from a larger artery and leads into a network of capillaries. Arterioles are a key part of the circulatory system, helping to regulate blood pressure and control blood flow into capillary beds.
Usage
The word "arteriola" (plural: arteriolae) is a technical, anatomical term. It is used almost exclusively in medical, biological, and physiological contexts to describe a specific type of blood vessel. The more common English term is arteriole.
Examples
- The arteriola constricted in response to the cold, reducing blood flow to the skin.
- Under the microscope, you can observe the arteriola branching into numerous capillaries.
- High blood pressure can cause damage to the walls of the arteriola.
Advanced Usage
- Arteriolar (adjective): Pertaining to or of the nature of an arteriole.
- The patient showed signs of arteriolar thickening.
Variants and Related Words
- Arteriole: The standard and more frequently used English synonym for "arteriola."
- Artery: A larger, muscular blood vessel that carries blood away from the heart.
- Capillary: The tiny, thin-walled vessel where exchange of gases and nutrients occurs, into which an arteriole feeds.
- Venule: A very small vein that collects blood from capillaries.
Synonyms
- Arteriole
- Terminal artery
- Precapillary arteriole
Antonyms
- Venule: A small vein, which carries blood toward the heart, as opposed to an arteriole, which carries blood away from the heart.
Related Phrases / Compound Terms
- Arteriolar network: The interconnected system of arterioles in a tissue.
- Arteriolar dilation/constriction: The widening or narrowing of arterioles, a primary mechanism for regulating blood pressure.
Noun
-
one of the small thin-walled arteries that end in capillaries
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