Smoking


It's interesting to note that other organisms besides humans have cilia. One example is the Paramecium. Paramecia are single-celled organisms that live in pond water. Here’s what they look like under the microscope.


Paramecium

See the tiny hair-like structures around the outside of its tiny one-celled "body"? These are cilia. And these cilia are just like the cilia in your lungs.