. The biology of marine animals. Marine animals; Physiology, Comparative. RESPIRATION 143 within. Tubicolous polychaetes of the families Sabellariidae, Sabellidae and Serpulidae possess extensive branchial crowns which are essentially filter- feeding devices for extracting microscopic organisms from sea water (Chapter 5). The pinnules of the crown (Fig. ) are thin-walled structures,. Fig. Diagrammatic Representation of the Structure and Disposition of Gill Lamellae in Teleosts (a). Gill filaments on two adjacent gill arches, (b). Enlarged view of one gill filament. Large arrows indicat
. The biology of marine animals. Marine animals; Physiology, Comparative. RESPIRATION 143 within. Tubicolous polychaetes of the families Sabellariidae, Sabellidae and Serpulidae possess extensive branchial crowns which are essentially filter- feeding devices for extracting microscopic organisms from sea water (Chapter 5). The pinnules of the crown (Fig. ) are thin-walled structures,. Fig. Diagrammatic Representation of the Structure and Disposition of Gill Lamellae in Teleosts (a). Gill filaments on two adjacent gill arches, (b). Enlarged view of one gill filament. Large arrows indicate direction of water flow; smaller arrows, course of blood through arteries, arterioles and capillaries. (.From van Dam (30).) each of which contains an axial blood vessel; diffusion distances are about 1/u in Sabella. Extirpation experiments involving removal of the crown provide an estimate of the amount of gaseous exchange occurring across the branchial filaments. Loss of the crown depresses respiratory rate (oxygen consump-. 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 Nicol, J. A. Colin (Joseph Arthur Colin), 1915-. New York, Interscience Publishers
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