Section of a Branchial Arch of a Cod

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In breathing, the mouth and gills of a fish open alternately; the water entering the mouth escapes by the opening of the gills. Shown is a section of the bronchial arch of a cod, with a pair processes supporting leaflets or plates. Labels: 1. A section of the branchial arch. 2, A pair of processes. 3, Branchial leaflets or plates. The number of leaflets in one process of the cod is about one thousand; in the salmon fourteen hundred; in the sturgeon sixteen hundred.


Fish Anatomy


Cutter, Calvin First Book on Analytic Anatomy, Physiology and Hygiene, Human and Comparative (Philadelphia: J. B. Lippincott & Co., 1875) 100


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