Spiders have two body segments. The front segment is called the Cephalothorax. The spider’s eyes, mouth fangs, stomach, brain and the glands that make the poison are on this part of the body. The legs are connected to this part, as well.Most spiders have eight eyes, but some have less.he second part of the body is called the Abdomen. The back end of the abdomen is where the spinnerets, the silk producing glands, are. The spider’s body has an oil on it to keep the spider from sticking to it’s own web. Spider’s legs are covered with many hairs.