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21. Inner gill of Musculium securis showing primary (1), secondary (2),... | Download Scientific Diagram
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![Nudibranch - Goniobranchus coi [before Chromodoris coi]. The two pink sausage shaped structures by the gill are the eggs sacs of a parasitic copepod Stock Photo - Alamy Nudibranch - Goniobranchus coi [before Chromodoris coi]. The two pink sausage shaped structures by the gill are the eggs sacs of a parasitic copepod Stock Photo - Alamy](https://l450v.alamy.com/450v/pyt06p/nudibranch-goniobranchus-coi-before-chromodoris-coi-the-two-pink-sausage-shaped-structures-by-the-gill-are-the-eggs-sacs-of-a-parasitic-copepod-pyt06p.jpg)
Nudibranch - Goniobranchus coi [before Chromodoris coi]. The two pink sausage shaped structures by the gill are the eggs sacs of a parasitic copepod Stock Photo - Alamy
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![Elements of biology, with special reference to their rôle in the lives of animals. Biology; Zoology. GILLS IN POSITION GILLS PULLED DOWN Fig. 109.—The gills and gill chamber of a lobster. Elements of biology, with special reference to their rôle in the lives of animals. Biology; Zoology. GILLS IN POSITION GILLS PULLED DOWN Fig. 109.—The gills and gill chamber of a lobster.](https://c8.alamy.com/comp/RCW5R1/elements-of-biology-with-special-reference-to-their-rle-in-the-lives-of-animals-biology-zoology-gills-in-position-gills-pulled-down-fig-109the-gills-and-gill-chamber-of-a-lobster-the-shield-that-covers-the-gill-chamber-has-been-cut-away-water-through-the-gill-chamber-in-some-of-the-members-of-the-class-arachnida-the-spiders-membranous-folds-in-sacs-arranged-like-zk-intestine-ovapy-heart-book-lung-spinning-glands-pulmonary-sac-fig-110a-diagrammatic-long-section-through-the-abdomen-of-a-spider-to-show-the-position-of-the-book-lungs-after-leukart-with-modifications-af-RCW5R1.jpg)
Elements of biology, with special reference to their rôle in the lives of animals. Biology; Zoology. GILLS IN POSITION GILLS PULLED DOWN Fig. 109.—The gills and gill chamber of a lobster.
![Zoology : for students and general readers . Zoology. 220 ZOOLOGY. which is digestive, and leads directly to the intestine behind. This pharyngeal respiratory portion of the digestive canal has on Zoology : for students and general readers . Zoology. 220 ZOOLOGY. which is digestive, and leads directly to the intestine behind. This pharyngeal respiratory portion of the digestive canal has on](https://c8.alamy.com/comp/PG1H2P/zoology-for-students-and-general-readers-zoology-220-zoology-which-is-digestive-and-leads-directly-to-the-intestine-behind-this-pharyngeal-respiratory-portion-of-the-digestive-canal-has-on-each-side-in-each-segment-a-dorsal-sac-the-two-commu-nicating-along-the-median-line-of-the-body-the-dorsal-re-spiratory-sacs-bear-in-their-walls-a-delicate-chitinous-gill-support-or-arch-between-the-gill-arches-forming-numerous-lamella-are-a-series-of-slits-leading-on-each-side-to-open-ings-spiracula-situated-dorsally-the-water-passes-through-the-mouth-into-each-gill-sac-and-out-by-PG1H2P.jpg)
Zoology : for students and general readers . Zoology. 220 ZOOLOGY. which is digestive, and leads directly to the intestine behind. This pharyngeal respiratory portion of the digestive canal has on
![Comparative anatomy of vertebrates. Anatomy, Comparative; Vertebrates. GILLS 355 Fishes.—In the true Fishes the gills come into close relation with the visceral arches, and in Elasmobranchs they consist of closely approximated Comparative anatomy of vertebrates. Anatomy, Comparative; Vertebrates. GILLS 355 Fishes.—In the true Fishes the gills come into close relation with the visceral arches, and in Elasmobranchs they consist of closely approximated](https://c8.alamy.com/comp/REFBMT/comparative-anatomy-of-vertebrates-anatomy-comparative-vertebrates-gills-355-fishesin-the-true-fishes-the-gills-come-into-close-relation-with-the-visceral-arches-and-in-elasmobranchs-they-consist-of-closely-approximated-transverse-lamina-which-are-firmly-attached-to-both-sides-of-the-septa-extending-outwards-from-the-arches-and-separating-the-individual-gill-sacs-from-one-another-so-that-each-septum-bears-a-half-gill-or-hemibranch-on-both-its-anterior-and-posterior-surface-figs-261-a-and-262-a-gill-or-holobranch-fiu-261-dissection-of-the-head-from-the-dorsal-side-of-REFBMT.jpg)
Comparative anatomy of vertebrates. Anatomy, Comparative; Vertebrates. GILLS 355 Fishes.—In the true Fishes the gills come into close relation with the visceral arches, and in Elasmobranchs they consist of closely approximated
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10 Egg sacs and egg strings, light microscopy. A: ovigerous female of... | Download Scientific Diagram
![British fresh water fishes. Fishes -- Great Britain. "Introduction. TJ^ISHES form the fourth class of vertebrate animals; they are provided either with gills -*- {branchice), or gill-sacs {iiiarsipobranc/nce), by means of British fresh water fishes. Fishes -- Great Britain. "Introduction. TJ^ISHES form the fourth class of vertebrate animals; they are provided either with gills -*- {branchice), or gill-sacs {iiiarsipobranc/nce), by means of](https://c8.alamy.com/comp/RH35K7/british-fresh-water-fishes-fishes-great-britain-quotintroduction-tjishes-form-the-fourth-class-of-vertebrate-animals-they-are-provided-either-with-gills-branchice-or-gill-sacs-iiiarsipobrancnce-by-means-of-which-they-are-enabled-to-breathe-the-air-contained-in-the-water-in-which-they-live-the-heart-which-consists-of-a-single-auricle-and-ventricle-is-present-in-almost-all-fish-except-in-the-sub-class-leptocardii-where-certain-pulsating-sinuses-perform-the-functions-of-a-heart-as-in-the-curious-little-marine-fish-the-lancelet-branchiostomi-lanccolatuui-the-limbs-in-RH35K7.jpg)