Most arthropods — the same class as cockroaches — have open circulatory systems, which basically means that their blood, a clear liquid called hemolymph, isn’t constrained by vessels as it ...

Cockroaches do not have the same kind of circulatory system as people. For blood to make its way through the vast network of human blood vessels, and especially through the tiny capillaries, a ...

Quirks and QuarksOur planet’s circulatory system depends on animals eating, excreting and expiring From the tiniest insects to the largest whales, biologist Joe Roman says animals play an ...

Tissues from cockroach and locust brains and nervous systems killed off 90% of E. coli and MRSA bacteria without harming the human cells they were attacking, according to researchers from the ...