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.
exists and is an alternate of . Cilia are microtubule-based hair-like organelles that extend from the surface of almost all cell types of the human body. Cilia are hair-like projections that move in a sweeping motion to move things along. For instance there are cilia in the female's fallopian tubes to sweep the egg towards the uterus, and there are cilia in the respiratory tract to sweep inhaled particles back up towards the mouth to get them out of the lungs.