heat definition In physics, a form of energy associated with the movement of atoms and molecules in any material. The higher the temperature of a material, the faster the atoms are moving, and hence the greater the amount of energy present as heat.
Cilia (singular: cilium) are microscopic, hair-like structures that extend outwardfrom the surface of manyanimal cells. These structures are important in the cell cycle and replication, and cilia play a vital part in human and animal development and in everyday life. A typical cilium is between one and ten micrometers long, and usually less than one micrometer wide.
The mucus, and anything stuck in it, are swept to the back of the nose by the cilia (silly â ah). The cilia are microscopic hair-like projections that form the pile of the carpet. They beat like tiny oars in the film of mucus, constantly moving it along, a wet sticky conveyor belt.