Ecdysozoa. Protostomes are divided into two large groups the Lophotrochozoa and the Ecdysozoa. The molluscs are the last group of the Lophotrochozoa we will deal with this semester. The Ecdysozoa includes two major groups the Nematoda and the Arthropoda. Ecdysozoa.
Male (top) and female Ascaris lumbricoides
Section through hookworm
attached to dog intestine
a serious bacterial
and healing the staff of Asclepias (showing a
snake entwined around a staff) and the caduceus
(which shows two snakes entwined about
a winged staff) very likely are derived from the
Guinea worm removal technique.
Elephantiasis of leg http://www.foodsafetyindia.nic.in/images/Trichinella_LifeCycle.gif
caused by filarial worms