-Hemopoiesis: Red bone marrow of ribs, sternum and centra of thoracic vertebrae (make red blood cells, white blood cells and platelets) breast bone (sternum) Located anteriorly and midsagitally in thoracic cage. Parts of the sternum -Manubrium (upper part) articulates with clavicle and first pair ribs through first costal cartilages
a formula unit is the symbolic representation of an ionic compound or network solid and a molecular formula is the symbolic representation of a molecular compound see the web links and related questions links for more information
In science, a formula is a concise way of expressing information symbolically, as in a mathematical or chemical formula. The informal use of the term formula in science refers to the general construct of a relationship between given quantities. The plural of formula can be spelled either as formulas or formulae (from the original Latin). In mathematics, a formula is an entity constructed using the symbols and formation rules of a given logical language.