0 Members and 1 Guest are viewing this topic.
Hi,first post here. tell you something else about insect circulatory systems- not only do they have that long, dorsal, pumping tube (heart) but many have accessory pulsatile organs at the bases of wings, antennae, and legs. These little accessory pumps boost the hemolymph pressure to send it to the furthest reaches of the appendages.
Insects have a open circulatory system rather than a closed one like mammals. In a closed system, blood is contained within veins or arteries whereas in an open one, blood travels freely. Butterflies have a heart but, if I remember correctly, it is located in the abdomen and operates a one-way flow system.