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_____> sinus venosus>atrium>ventricle>conus arteriosum>ventral aorta > gills>dorsal aorta>body
body
body>______>atrium>ventricle>conus arteriosum>ventral aorta > gills>dorsa aorta>body
sinus venosus
body> sinus venosus>_____>ventricle>conus arteriosum>ventral aorta > gills>dorsa aorta>body
atrium
body> sinus venosus>atrium>_____>conus arteriosum>ventral aorta > gills>dorsa aorta>body
ventricle
body> sinus venosus>atrium>ventricle>_______>ventral aorta > gills>dorsa aorta>body
conus arteriosum
body> sinus venosus>atrium>ventricle>conus arteriosum>______ > gills>dorsa aorta>body
ventral aorta
body> sinus venosus>atrium>ventricle>conus arteriosum>ventral aorta > ____>dorsa aorta>body
gills
body> sinus venosus>atrium>ventricle>conus arteriosum>ventral aorta > gills>_____>body
dorsal aorta
body> sinus venosus>atrium>ventricle>conus arteriosum>ventral aorta > gills>dorsa aorta>____
body
2 chambers
atrium and ventricle
pathway
sinus venosus → atrium → ventricle → bulbus arteriosus