The front half of a spider's body which is the combined head and thorax.

The hind body part, containing the internal organs and has the ability to expand and contract in accordance with the condition of the spider.

The pair of moveable appendages in front of the mouth of spiders which include the fangs.

Spiders have a pair of pedipalps which perform sensory roles, can manipulate their food and are used by the males in mating.

The organs on the tip of a spider's abdomen that manipulate silk as it exits the silk glands to enable the spider to use it in various ways.

Spiders have eight walking legs, each leg has seven jointed segments. Spiders with long pedipalps (such as tarantulas) sometimes appear as though they have ten legs, however this is not the case.