Lamprey Circulatory System Diagram. It is enclosed in a thick walled pericardium supported by a cartilaginous plate. Circulatory system felis domesticus.
Circulatory anatomy of the dogfish shark. A membrane was removed to expose the heart and some of its major blood vessels. An earthworm is a segmented worm.
Circulation in agnathans in the lamprey heart the atrium and ventricle are side by side with the sinus venosus entering the atrium laterally.
Venous system of lamprey. This is because the worm casting faecal deposit increases the fertility and burrowing. This vein divides into two posterior cardinal veins. They are the common inhabitants of moist soil and feed on organic matter.