<Tr> <Th> FMA </Th> <Td> 24013 </Td> </Tr> <Tr> <Td_colspan="2"> Anatomical terminology (edit on Wikidata) </Td> </Tr> <P> The diaphysis is the main or midsection (shaft) of a long bone . It is made up of cortical bone and usually contains bone marrow and adipose tissue (fat). </P> <P> It is a middle tubular part composed of compact bone which surrounds a central marrow cavity which contains red or yellow marrow . In diaphysis, primary ossification occurs . </P>

Where is the diaphysis located on a long bone