Worms have a closed circulatory system because they inherited it from their ancestors.
Closed
closed
Amphibians have closed circulatory system Closed
The circulatory fluid (I don't think its blood) and respiratory pigments circulate in vessels and never leave the vessels, much like that of humans and other mammals. This is in contrast to the circulatory system of insects, where the fluid (haemolymph) goes from the heart, through a vessel and then flows out to surround or 'bathe' the organs
closed circulatory system (double circulatory system)
Yes it has a closed circulatory system
closed circulatory system
Sea otters have a closed circulatory system.
Segmented worms have closed circulatory systems like humans. This means that blood is carried throughout the body in vessels: arteries, veins, and capillaries. So, like humans a segmented worm's circulatory system just carries blood through vessels.
Earthworms have a closed circulatory system. Blood is pumped throughout its body by ringed blood vessels. An open circulatory system is not contained in vessels. In a closed circulatory system oxygen is carried in blood! hope this helps=)
Platypuses have a closed circulatory system.
closed circulatory system.