Cilia

Definition

Microscopic hair-like structures found on the surfaces of certain cells, including those in insect tracheae and sensory organs, aiding in movement and sensory functions.

Etymology

From Latin 'cilium', meaning 'eyelid' or 'eyelash'.

Example

The cilia lining the trachea of insects help to move debris and mucus out of the respiratory system.

Synonyms

• Hair-like structures

Related Terms

• Tracheae
• Sensory organs
• Flagella

Usage Notes

Cilia play a crucial role in respiratory systems of insects and can also be sensory structures on antennae and other appendages.