Tracheal Spiracle
- Pronunciation
- /TRAY-kee-uhl SPIH-ruh-kuhl/
- Category
- Anatomy
- Singular
- Tracheal Spiracle
- Plural
- Tracheal Spiracles
Definition
External openings in the exoskeleton of insects and some arachnids that allow for the exchange of gases, playing a crucial role in their respiratory system.
Etymology
From 'trachea', referring to the windpipe, and 'spiracle', from Latin 'spiraculum', meaning 'air hole'.
Example
The tracheal spiracles of a grasshopper are located on the sides of its abdomen and thorax, facilitating respiration.
Synonyms
Related Terms
- Trachea
- Respiration
- Exoskeleton
Usage Notes
Tracheal spiracles are typically equipped with valves that can open and close to reduce water loss and protect against harmful particles.