Three parts of the insect: head, thoracic, and stomach. People have a head, a torso (similar to the thorax), and a stomach. Spiders have a combination of the head and the thoracic (cephalothorax) and the abdomen.
Why do insects have 3 body parts?
The insect's body is divided into three parts: the head, the thoracic, and the abdomen. The head is specialized in sensing and feeding; the thorax, where the legs and wings (if any) work, is specialized in motion; and the stomach for digestion, respiration, excretion, and reproduction.
What are the 3 regions of the insect body and count each part of the region?
Insects have three major body regions: head, thoracic, and abdomen (see Insect Body Regions, right). The head is made up of 5-7 joints and carries eyes, horns, and parts of the mouth. The thorax consists of three parts called pro-, maso-, and metathorax. The appendages used for movement are connected to the thorax.
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