| 释义 |
pharyngeal cleft
pharyngeal cleft or pharyngeal grooven. See gill slit.
pharyngeal cleft
pharyngeal cleft[fə′rin·jē·əl ′kleft] (embryology) One of the paired open clefts on the sides of the embryonic pharynx between successive visceral arches in vertebrates. pharyngeal cleft
pharyngeal cleft or pharyngeal grooven. See gill slit.pharyngeal cleft A primitive structure seen in the 5-week embryo, only part of which (the dorsal aspect of the 1st pharyngeal cleft) gives rise to the external auditory canal; the 2nd, 3rd and 4th pharyngeal clefts undergo atrophy and are covered by the 2nd pharyngeal arch.pha·ryn·ge·al groove (făr-in'jē-ăl grūv) The ectodermal groove between two pharyngeal arches in the human embryo.
Synonym(s): branchial cleft, pharyngeal cleft. ThesaurusSeebranchial arch |