What is the function of marrow and marrow ?

The blood constitutes to°from the blood plasma(liquid within blood part) and the blood cell(the cell, gonorrhea cell of the red cell, grain, list pit cell, blood platelets...etc.) of red, opaque and take liquid of glue sex.Normal the adult's total blood quantity for invite 8% of weight.The blood is in the blood vessel flow an interest not, is the nourishment material of the conveyance in the human body, take metabolism outcome and regulate equilibrium inside the environment and exercise to defendoof function of"river".People's understanding to the blood deepens gradually.In 1900 before red cell ABO blood type discover, many people because of the blood transfusion that the blood type not agree with but the dissolve of occurrence severity blood reaction even die.Invented marrow to wear bodkin in 1929, from now on the marrow cell just becomes an importance part of hematology research.


The blood cell maintenance amount and the function opposite Heng of normal human body settle.This kind of Heng's settle is the dynamic equilibrium of metabolism, namely decrepitude, death of cell drive usually constantly the freshman's cell replace.For example mankind average life of the red cell about is 120 days, the life span of the blood platelets about 7 the －s be 10 days.A normal adult has 10 red cell decrepitude death around everyday;The same also has the red cell freshman of close by amount.


The adult builds blood organ to mainly limit in the marrow, spleen and the lymph knot.But spleen and the whole body lymphoid knot are after be born the main function is to urge gonorrhea cell of the second-time propagate, namely the gonorrhea cell breeds after get in touch with antigen of the immunity respond.So the marrow builds blood function to seem to be is importance.After be born, the marrow is the only place which produce red cell, grain cell and blood platelets under the normal condition and the marrow also produces gonorrhea cell and list to check cell.


The marrow is a kind of spongy organization in the mesh of net of the loose bone substance of marrow chamber and flat even bone(like Ge bone) which exists in the long bone(such as Gong bone, bone).Can produce the marrow of blood cell to slightly assume red, be called red marrow.When person be born, the red marrow was full of a whole body marrow chamber, enlarged along with the age and the fat cell increase, very part of red marrows were replace by the yellow marrow, and the at last almost only flat even bone marrow had red marrow in the chamber.This kind variety may be because the adult doesn't need all marrow chambers to build blood, parts of marrow chambers build the blood has already enough added the blood cell needed.Crash when the body seriously lack blood, part of yellow marrows can be act for by the red marrow and the build of marrow blood ability shows a Zhao exaltation.


About 30 in the last yearses, the blood cell is born of research development very quick, have already prove now mankind's existence in the marrow builds many ability of blood a stem cell, the amount doesn't arrive 1% of the marrow total number of cells, they have the high ego renew of ability;And can divide into the Zu cell(fasten a stem cell such as the lymph, the grain fasten stem cell) of each blood cell system, is in great quantities dividing and propagate to various original and mature blood cell, end, these mature of the blood cell gets into blood through a marrow, exertive respectively of physiology function.The human body builds a blood stem cell different because of existent part, produce different effect.A part exists at the stem-cell pond, is the storage database that the human body builds blood cell a rebirth, with orientation with satisfy the bottom of various appearance to build the demand of blood:Another a part exist in propagate pond, these cells continuously propagate renewal to make up because of cell decrepitude or throw to lose with the result that of blood cell shortage, maintenance human body blood balance.


The marrow builds blood ability very strong, the marrow tallestly builds blood ability and can attain to normally build a blood circumstance of 900%, if reserve marrow of very it a, can complete to normally build blood function, so a little amount marrow alms has no influence to the human body.The human body builds blood organization to have very strong generation Chang function, after being to sample parts of marrows, build the blood stem cell will speed to propagate, at 1 and 2 with in the week and completely recover original level.Therefore, make a contribution will not not only influence the build of oneself blood function, on the contrary make the build of oneself blood system get to toughen, but also have the vitality of life.