Definition
A 'somite' is a block-like structure that forms during the embryonic development of vertebrates. These structures arise in pairs along the developing neural tube. They are precursors to important body parts like vertebrae, ribs, and muscles. Think of 'somites' as building blocks for the axial skeleton and musculature. They are segmented and contribute to the metameric organization of the body. Studying 'somites' is critical in developmental biology. It helps scientists understand the formation of the vertebrate body plan.