- The part of the respiratory passages beyond the respiratory bronchioles, from which the alveolar sacs and alveoli arise.
- The smallest of the intralobular ducts in the mammary gland, into which the secretory alveoli open.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
