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.
Mucus in the airways helps trap foreign particles to protect the respiratory system. Cilia are tiny beating hairs that sweep the mucus up to your throat where it is either coughed out or swallowed by the acids in your stomach.The cilia are like a janitor who always sweeps up the messes.ilia are tiny beating hairs that sweep the mucus up to your throat where it is either coughed out or swallowed by the acids in your stomach. The cilia are like a janitor who always sweeps up the messes.