-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
Definition of unit for English Language Learners. : 1  a single thing, person, or group that is a part of something larger. : 2  a part of a hospital where a particular type of care is provided. : 3  a particular amount of length, time, money, etc., that is used as a standard for counting or measuring.