branchial duct

branchial duct

n.
The lumen of one of the embryonic pharyngeal pouches that has elongated and narrowed as a result of differentiation.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
References in periodicals archive ?
The same is true for Ariaspis for which Elliott & Swift (2010) showed the presence of a continuous lateral lamina with no notch for the branchial opening and a posterior opening for the branchial duct. A branchial plate was identified in Listraspis by Denison (1964), however, a review of the original and some additional material indicates that this is a lateral lamina not separated from the rest of the dorsal shield (DKE, pers.
The denticles and denticulate platelets discovered, along with rostral, cephalo-pectoral and lateral scales, give evidence that they come from the anterior part of the body, from the lining of the bucco-pharyngeal and branchial regions (i.e., the mouth and throat, and the branchial ducts and chambers).