gill cleft
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gill cleft
(gĭl)The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
gill cleft
or gill slit
an inpushing of the epidermis in the region of the GILLS in developing CHORDATE embryos including humans. The gill clefts normally meet similar outpushings from the endoderm of the pharynx, and in fish and occasionally in terrestrial vertebrates such as amphibians, break through to the exterior to form the gill slits.Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
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