Atrium

Definition

A chamber or cavity in the anatomy of insects, often involved in respiration or part of the tracheal system. It can also be a space leading into internal structures of the respiratory system.

Etymology

From Latin 'atrium', meaning 'central court' or 'entrance hall', adapted in scientific contexts to describe large cavities or chambers in various organisms.

Example

In some insects, the atrium is connected to the tracheal system, allowing for the entry and distribution of air throughout the body.

Related Terms

• Hemolymph
• Circulatory system
• Respiratory system
• Trachea

Usage Notes

The term 'atrium' may be used differently depending on the specific context within entomology, such as referring to components of the respiratory or circulatory systems.