Here's a bit more about them:
* Cilia are microscopic, hair-like projections that extend from the surface of certain cells.
* They are found in many places, including the respiratory system (trachea, bronchi), the digestive system (small intestine), and the reproductive system (fallopian tubes).
* They move in a coordinated, wave-like motion, which helps to:
* Trap and remove foreign particles: This includes dust, pollen, bacteria, viruses, and other pathogens.
* Move mucus: Cilia help to move mucus, which is a sticky substance that traps pathogens, towards the throat or other exit points from the body.
* Transport fluids: Cilia can also help to transport fluids in the body, such as in the fallopian tubes, where they help to move the egg towards the uterus.
Cilia are an important part of the body's defense system against infection. By trapping and removing pathogens, they help to prevent illness and maintain overall health.
