Three types of marrow

Answer 1

; Only in the red marrow (lat.: Medulla ossium titles) are the haematinic cells. This concerns about 400 gram, of those in each case 180 gram at erythropoiesis, the production of the Erythrozyten, and the Granulopoese, which production of the leukocytes are involved. The remaining 40 gram are allotted to cells, which produce Thrombozyten. ; While with the baby the red marrow is to be found everywhere in the bone, the red marrow concentrates on the plates and short bone with the adult. In the shank of the long bones (Diaphyse) the red marrow is replaced with increasing age by fat Marks. But also within the red marrow fat cells are, in the portion of 35% in the eddy bodies up to 75% in the ribs. ; In the yellow marrow (lat.: Medulla ossium flava) are stored particularly large quantities fat into the Retikulumzellen, whereby that works Marks yellow. Yellow marrow cannot produce blood cells, by the body however with strong Blutverlust again to red marrow is back formed. ; Yellow marrow is mainly within the joint-far ranges (Diaphysen) the tube bone. ; With this variant of the yellow marrow the fat storages are replaced by water, therefore the gelatinous appearance. White marrow cannot be reconverted no more to red marrow, it is thus a form of the Marks degenerated irreversibly. This variant arises usually in the Greisenalter or with seriously ill people.