precapillary sphincter

noun

Medical Definition of precapillary sphincter

: a sphincter of smooth muscle tissue located at the arterial end of a capillary and serving to control the flow of blood to the tissues

Learn More about precapillary sphincter

Cite this Entry

“Precapillary sphincter.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/precapillary%20sphincter. Accessed 15 Jun. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

WORD OF THE DAY

Test Your Vocabulary

Name that Thing: Dog Breeds

Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!