. The chordates. Chordata. Fig. 56. Diagram of gill-clefts in (A) elasmobranchs and (B) teleosts. (A', B') A single gill of each, (a) Artery; (ba) branchial arch; (br) branchial ray; (d) demi- branchs; (gc) atrial chamber; (gr) gill raker; (o) operculum; (oe) esophagus: (oo) opercular opening; (s) spiracle (in .4); (s) septum (in A') (v) veins. (Courtesy, Kingsley: "Comparative Anatomy of Vertebrates," Philadelphia, The Blakiston Company.). Fig. 57. Diagram of the relations of external and internal gills in the anuran (frog or toad) tadpole, (ab, eb) Afferent and efferent branchial a
. The chordates. Chordata. Fig. 56. Diagram of gill-clefts in (A) elasmobranchs and (B) teleosts. (A', B') A single gill of each, (a) Artery; (ba) branchial arch; (br) branchial ray; (d) demi- branchs; (gc) atrial chamber; (gr) gill raker; (o) operculum; (oe) esophagus: (oo) opercular opening; (s) spiracle (in .4); (s) septum (in A') (v) veins. (Courtesy, Kingsley: "Comparative Anatomy of Vertebrates," Philadelphia, The Blakiston Company.). Fig. 57. Diagram of the relations of external and internal gills in the anuran (frog or toad) tadpole, (ab, eb) Afferent and efferent branchial arteries; (h) heart; (o) ear cavity; (ph) pharynx; (ra) radix aortae. (After Maurer. Courtesy. Kingsley: "Comparative Anatomy of Vertebrates," Philadelphia. The Blakiston Company.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Rand, Herbert W. (Herbert Wilbur), 1872-1960. Philadelphia : Blakiston
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