notochord
(Science: embryology) An axial mesodermal tissue found in embryonic stages of all chordates and protochordates, often regressing as maturity is approached. Typically a rod shaped mass of vacuolated cells. It lies immediately below the nerve cord and may provide mechanical strength to the embryo.
Myelin sheath is essential for a faster conductivity of signals. Know more about this feature of some neurons in the Cen..
This tutorial digs into the past to investigate the origins of life. The section is split into geological periods in the..
Part of the genetic information is devoted to the synthesis of proteins. mRNA, a type of RNA, is produced as a transcri..
Autotrophs flourished, absorbing carbon and light. Soon after, primitive life forms that could assimilate oxygen thrived..
The evolution of the species of the genus "Homo" led to the emergence of modern humans. Find out more about human evolut..
A running water environment offers numerous microhabitats for many types of animals. Similar to plants, animals in lotic..
