Dental enamel
(Science: dentistry) a hard thin translucent layer of calcified substance which envelops and protects the dentin of the crown of the tooth. It is the hardest substance in the body and is almost entirely composed of calcium salts. Under the microscope, it is composed of thin rods (enamel prisms) held together by cementing substance, and surrounded by an enamel sheath.
Dental enamel (Science: dentistry) a hard thin translucent layer of calcified substance which envelops and protects the dentin of the crown of the tooth. It is the hardest substance in the body and is almost entirely composed of calcium salts. Under the microscope, it is composed of thin rods (enamel prisms) held together by cementing..
The kidneys are responsible for the regulation of water and inorganic ions. Read this tutorial to learn about the differ..
The body is comprised of different elements with hydrogen, oxygen, carbon, and nitrogen as the major four. This tutorial..
Part of the genetic information is devoted to the synthesis of proteins. mRNA, a type of RNA, is produced as a transcri..
A running water environment offers numerous microhabitats for many types of animals. Similar to plants, animals in lotic..
Plants are responsible for incredible feats of molecular transformation. Plant processes, such as photosynthesis, photop..
This tutorial looks at some of the communities in freshwater lentic habitats. For instance, symbiosis occurs in a commun..