Tracheoles

Definition

The fine, thin-walled tubules that extend from the trachea of insects, facilitating the transfer of oxygen directly to tissues and cells.

Etymology

Derived from Greek 'trachia' meaning 'windpipe', with the diminutive suffix '-ole' indicating a smaller structure.

Example

The tracheoles increase the surface area for gas exchange and minimize the distance for the diffusion of oxygen and carbon dioxide in the tissues of the bee.

Related Terms

• Trachea
• Respiration
• Spiracles
• Oxygen
• Diffusion

Usage Notes

Tracheoles are essential for the respiratory efficiency of insects and are part of a larger tracheal system adapted for minimizing water loss while maximizing gas exchange.