Worms: Characteristics and Types

worms are cold-blooded and vertebrates with long, slender, soft bodies.

worms exhibit, bilateral symmetry, even without arms or legs. A thin wall of transverse,

epithelial tissue called a septum divides, each segment from the next segment

in a segmented worm. The coelom is the hollow body cavity of a segmented worm that lies between

the body wall and the digestive track. A clitellate is a type of segmented worm that has a

thickened glandular region called a clitellum, which aids in the reproductive process.

microscopic, hair like bristles called setae stick out from the body segments and help

a clitellate move through its burrow. Aortic arches are five pairs of muscle line,