![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://c8.alamy.com/comp/MMBT6M/nudibranch-goniobranchus-coi-before-chromodoris-coi-the-two-pink-sausage-shaped-structures-by-the-gill-are-the-eggs-sacs-of-a-parasitic-copepod-MMBT6M.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
![Air Sac Bird Respiratory System Breathing Gill, PNG, 1390x949px, Watercolor, Cartoon, Flower, Frame, Heart Download Free Air Sac Bird Respiratory System Breathing Gill, PNG, 1390x949px, Watercolor, Cartoon, Flower, Frame, Heart Download Free](https://img.favpng.com/10/13/15/air-sac-bird-respiratory-system-breathing-gill-png-favpng-gt5eQswQjQLUbrQdV1Ky674Cq.jpg)
Air Sac Bird Respiratory System Breathing Gill, PNG, 1390x949px, Watercolor, Cartoon, Flower, Frame, Heart Download Free
![Text-book of zoology for schools and colleges. Zoology. ORDEKS OF FISHES. 217 vessels ramify (Fig. 106, B). Internally the sacs communi- cate with the cavity of the pharynx, by means of Text-book of zoology for schools and colleges. Zoology. ORDEKS OF FISHES. 217 vessels ramify (Fig. 106, B). Internally the sacs communi- cate with the cavity of the pharynx, by means of](https://c8.alamy.com/comp/RE0FP0/text-book-of-zoology-for-schools-and-colleges-zoology-ordeks-of-fishes-217-vessels-ramify-fig-106-b-internally-the-sacs-communi-cate-with-the-cavity-of-the-pharynx-by-means-of-a-common-respiratory-tube-into-which-they-all-open-it-follows-from-this-arrangement-that-the-gill-pouches-on-the-two-sides-of-the-neck-communicate-freely-with-one-another-through-the-phar-ynx-the-object-of-this-arrangement-is-to-obviate-the-ne-cessity-for-admitting-the-water-to-the-guls-through-the-mouth-fig-106a-lamproy-p0tromison-stowing-the-suckin-moutli-and-the-apertures-of-the-gill-sacs-b-RE0FP0.jpg)
Text-book of zoology for schools and colleges. Zoology. ORDEKS OF FISHES. 217 vessels ramify (Fig. 106, B). Internally the sacs communi- cate with the cavity of the pharynx, by means of
![Site of attachment of female Strabax monstrosus in Scorpaena notata.... | Download Scientific Diagram Site of attachment of female Strabax monstrosus in Scorpaena notata.... | Download Scientific Diagram](https://www.researchgate.net/profile/Sihem-Bahri/publication/322610554/figure/fig1/AS:585922210967552@1516706149194/Site-of-attachment-of-female-Strabax-monstrosus-in-Scorpaena-notata-a-Ovigerous.png)
Site of attachment of female Strabax monstrosus in Scorpaena notata.... | Download Scientific Diagram
![Expression patterns of Rhcg1 mRNA on the surface of the yolk sac and... | Download Scientific Diagram Expression patterns of Rhcg1 mRNA on the surface of the yolk sac and... | Download Scientific Diagram](https://www.researchgate.net/profile/Koichi-Kawakami/publication/6152466/figure/fig2/AS:667207931555849@1536086175484/Expression-patterns-of-Rhcg1-mRNA-on-the-surface-of-the-yolk-sac-and-gill-of-zebrafish.png)
Expression patterns of Rhcg1 mRNA on the surface of the yolk sac and... | Download Scientific Diagram
![Minden Pictures - Tyron's Risbecia (Risbecia tryoni) starting mating The two purple sausage shaped structures by the gill are the eggs sacs of a parasitic copepod living inside the slug Rinca, Indonesia - Minden Pictures - Tyron's Risbecia (Risbecia tryoni) starting mating The two purple sausage shaped structures by the gill are the eggs sacs of a parasitic copepod living inside the slug Rinca, Indonesia -](https://www.mindenpictures.com/cache/pcache2/90040121.jpg)
Minden Pictures - Tyron's Risbecia (Risbecia tryoni) starting mating The two purple sausage shaped structures by the gill are the eggs sacs of a parasitic copepod living inside the slug Rinca, Indonesia -
![The Cambridge natural history. Zoology. RESPIRATORY ORGANS 289 being; but, when food is being swallowed, the pharyngeal con- strictor is relaxed and the internal apertures of the gill-sacs are closed by The Cambridge natural history. Zoology. RESPIRATORY ORGANS 289 being; but, when food is being swallowed, the pharyngeal con- strictor is relaxed and the internal apertures of the gill-sacs are closed by](https://c8.alamy.com/comp/RDMBDB/the-cambridge-natural-history-zoology-respiratory-organs-289-being-but-when-food-is-being-swallowed-the-pharyngeal-con-strictor-is-relaxed-and-the-internal-apertures-of-the-gill-sacs-are-closed-by-the-contraction-of-their-own-sphincter-muscles-in-addition-to-the-usual-respiratory-organs-it-is-probable-that-in-not-a-few-fishes-the-superficial-skin-may-share-with-the-gills-the-function-of-breathing-in-this-connexion-may-be-mentioned-fig-167embryos-of-the-electric-torpedo-torpedo-ocdlata-a-dorsal-view-b-ventral-view-of-a-slightly-younger-specimen-el-cloaca-elo-electric-RDMBDB.jpg)
The Cambridge natural history. Zoology. RESPIRATORY ORGANS 289 being; but, when food is being swallowed, the pharyngeal con- strictor is relaxed and the internal apertures of the gill-sacs are closed by
![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://c8.alamy.com/comp/MMBT6N/nudibranch-goniobranchus-coi-before-chromodoris-coi-the-two-pink-sausage-shaped-structures-by-the-gill-are-the-eggs-sacs-of-a-parasitic-copepod-MMBT6N.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
![A treatise on zoology . Fio. 31. Diagram of the gills and their afferent blood system in A, Bddlostonw (Hoiaea stouii); B,Iaramyxuic ; and C, Miixiiie (after Dean). Ventral view, c.o, common A treatise on zoology . Fio. 31. Diagram of the gills and their afferent blood system in A, Bddlostonw (Hoiaea stouii); B,Iaramyxuic ; and C, Miixiiie (after Dean). Ventral view, c.o, common](https://c8.alamy.com/comp/2AJDAHA/a-treatise-on-zoology-fio-31-diagram-of-the-gills-and-their-afferent-blood-system-in-a-bddlostonw-hoiaea-stouii-biaramyxuic-and-c-miixiiie-after-dean-ventral-view-co-common-opening-of-six-gill-sacsand-oesophageal-duct-bs-gill-sac-d-oesophageal-duct-h-heart-o-external-opening-ofgill-sac-ph-pharynx-t-outline-of-rasping-tongue-tc-tube-leading-to-exterior-vaventral-aorta-i-considerable-extent-in-the-adult-as-a-vessel-carrying-blood-fromthe-intestine-through-the-liver-direct-to-the-sinus-venosus-fig-32-myxinoidea-49-=-h-g-cs-g5-p-5-3-s-2-c-=-s-5-2AJDAHA.jpg)