Which body region is the middle section of most arthropods?

Which body region is the middle section of most arthropods?

• A. Carapace
• B. Head
• C. Thorax
• D. Abdomen

Answer: (C)

Arthropods are organized into distinct body segments called tagmata, with a common three-part arrangement: head, middle section, and abdomen. The middle section is the thorax. This is the part of the body that bears the appendages used for movement—usually the legs, and in many insects, the wings attach there as well. The head handles sensory inputs and feeding, while the abdomen contains much of the digestive and reproductive systems. A carapace, when present, is a protective shield over the front segments, not a separate middle region, and the abdomen is the rear portion, not the middle.

Arthropods are organized into distinct body segments called tagmata, with a common three-part arrangement: head, middle section, and abdomen. The middle section is the thorax. This is the part of the body that bears the appendages used for movement—usually the legs, and in many insects, the wings attach there as well. The head handles sensory inputs and feeding, while the abdomen contains much of the digestive and reproductive systems. A carapace, when present, is a protective shield over the front segments, not a separate middle region, and the abdomen is the rear portion, not the middle.