As with most insects, the Spider's body is made up of segments. However, in the case of Spiders, they really have so many segments that they are like jigsaw puzzles. Their main body is made up of three main segments - the head, main body, and the lower body (also called the abdomen because that's where most of the body's internal organs are located). The Spider's legs are also divided into segments too.
The Spider's heart comes in the form of a long tube, and it extends all over the back side of the spider's abdomen (the lower body segment). This insect has lungs too, and these are located on the lower portion of its body (again, in the abdomen part). Also located in the abdomen is the Spider's intestines and stomach.
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