The embryogenesis and anatomy of Waldeyer's ring.
The developmental history of the embryonic germ disk is briefly traced through the bilaminar, trilaminar, and bodyfold stages with emphasis on the pharyngeal arches, pouches, and clefts. This is followed by a discussion of the genesis and adult anatomy of the tonsillar tissues.
D000234:Adenoids / Q000196:embryology*; D001934:Branchial Region / Q000033:anatomy & histology; D006801:Humans; D014066:Palatine Tonsil / Q000196:embryology*; D010614:Pharynx / Q000196:embryology; D014059:Tongue / Q000196:embryology