Defense and Summurization

Defense:

Nematodes have a defense mechanism that helps them in various ways but the protection does have some limitations. Many Nematoda, such as Ascarids, have a battery of selective inhibitors to protect them from the immune system and the enzymes that the host body excretes. The Nematodes have within them chemicals such as ACL, containing amino acids, and protein line substances, which help to protect the Ascarid from the immune system. Along with that they also have a way to protect themselves from the inside, using a flexible and tough cuticle which surrounds the body with a system of groves, covering the body from tail to head, this cuticle consists from 4 to 2 layers. 

Summarization: 

Even though each and every different type of Nematode has a different function or purpose, they are all using very similar and powerful processes, and adapting to their surroundings and helping them survive.