Threadworms
Threadworms (also known as pinworms) are a very common infectious worm. They are very common among young children and on of the most common worm infections in the United States. Threadworms are most notable in that they are small white worms very resembling small pieces of thread. They are transmitted when the eggs of the worms are transmitted under the fingernails of individuals. When the eggs are transmitted they can then contaminate food and infect people.
Threadworms, being a Nematoda, share the same type of nervous system as other in the Nematoda phylum consisting of nerves running along the body in between the layer of outer skin and muscle. The nerves connect to the pharynx, located in the head, and again form a primitive brain for the worm. Small nerves protruding forward from the pharynx form very primitive sensory organs for the worm.
Threadworms, being a Nematoda, share the same type of nervous system as other in the Nematoda phylum consisting of nerves running along the body in between the layer of outer skin and muscle. The nerves connect to the pharynx, located in the head, and again form a primitive brain for the worm. Small nerves protruding forward from the pharynx form very primitive sensory organs for the worm.