pharyngeal slit
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Pharyngeal slit — Pharyngeal slits, characteristic of both hemichordata and chordata, are used by organisms in feeding. The wall of the pharynx is perforated by up to 200 vertical slits, which are separated by stiffening rods.Rows of beating cilia cause currents… … Wikipedia
pharyngeal slit — noun see pharyngeal cleft … Useful english dictionary
pharyngeal cleft — noun or pharyngeal slit : visceral cleft … Useful english dictionary
pharyngeal pouch — n any of a series of evaginations of ectoderm on either side of the pharynx that meet the corresponding external furrows and give rise to the branchial clefts of the vertebrate embryo * * * (branchial pouch, visceral pouch) any of the paired… … Medical dictionary
Chordate — Chordata Temporal range: Early Cambrian – Recent, 540–0 Ma … Wikipedia
branchial cleft — n one of the open or potentially open clefts that occur on each side of the neck region of a vertebrate embryo between the branchial arches, are formed by the meeting of an external furrow in the ectoderm with a pharyngeal pouch, may or may not… … Medical dictionary
animal development — Introduction the processes that lead eventually to the formation of a new animal starting from cells derived from one or more parent individuals. Development thus occurs following the process by which a new generation of organisms is produced by … Universalium
syndrome — The aggregate of symptoms and signs associated with any morbid process, and constituting together the picture of the disease. SEE ALSO: disease. [G. s., a running together, tumultuous concourse; (in med.) a concurrence of symptoms, fr. syn,… … Medical dictionary
perciform — ▪ fish order Introduction any member of the order Perciformes, a group of bony fishes with more than 6,000 species placed in about 150 families. The order is the largest group of fishes in the world today. Perciform fishes occur in… … Universalium
Hyoid bone — Bone: Hyoid bone Hyoid bone. Anterior surface. Enlarged … Wikipedia
