What is the relationship between long bones of the human body and blood cell reproduction? Explain.?
84887
Long bones in adults don't produce blood cells (except for the parts closest to your shoulders and your pelvis).  Their marrow is filled with fatty tissue. (My theory is that long bones aren't used for blood cell production so that our evolutionary ancestors could lose an arm or a leg without jeprodizing their abiltiy to make blood cells)\n\nIn children, however, all bone marrow is devoted to the production of blood cells until the age of 5 or 6.
677772
The formation of bone tissue within cartilage; the process by which bones grow in length\nhttp://www.answers.com/topic/endochondral-ossification\nhttp://en.wikipedia.org/wiki/Endochondral_ossification\nhttp://www3.umdnj.edu/histsweb/lab4/bone/boneendocondral.html
1046768
this is a good question. what decides a cell living or nonliving is its metabolic activity. ..now you got me thinking... \n\nBut  to clear some confusion, they don't have nucleus, and that's why they can't reproduce by themselves.\n\nK...finally got some info from a very good friend, a hematologist. Here is what he says...\n\n"The question you asked is a very very deep one indeed.  In fact, we can have a very lively debate about it.  It is a very philosophical question, in that it's equivalent to asking, "Is virus a living organism?"  If we define life, as you say, by metabolic activities, then yes, red blood cell is a living cell.  Red blood cell uses the metabolic pathway of glycosis to generate energy.  It also has a variety of proteins and enzymes responsible for signal transduction.\n \nHowever, a red blood cell is a terminally differentiated cell and more than that it lacks the genetic material, the means and the mechanism to replicate.  Given that one of the primary goal of life is to have "offsprings" either through asexual replication or sexual duplication, red blood cell lacks that ability.  However, the progenitor of red blood cell (hematopoietic stem cells) does have the ability to replicate and differentiate."
773431
Long bones are supplied by the nutricious artery,wich penetrates the periostium  and ussualy gets into the the bone marrowcavity to spread across the trabecular bone. before it gets there, arteriolar and capilar branches distribute along the cortical bone through the structures calles osteones, made of concentric sheats of osteoid tissue created by the osteoblasts,wich become osteocites and take tehir place between sehat and shata, creating concentric lines of osteocytes, wich are kept in  spaces called osteoplasts or lacunae. Because the matrix is too rigid to allow nutrients to freely difuse , the osteocytes comunicate each other by cellular prolongations that go through very small tubes in the laminae called canalicules. These canalicules also serve as a mean to reach the nutrients that bring the capillaries in the osteones.
335803
Mature human RBC have no nucleus.\n\nMuscle cells have several, as a result of cells fusing together.
1075652
Did you know that when a person dies, their fingernails and hair keep growing. Now the bones, I know that the bone marrow dies, I don't know about tooth enamel.
359822
when you are born you have 306 bones in the human body when you are born... you have 206 when you are 25... this is because some of your bones fuse together as you grow...
747677
The answer is 206 \n\nThe "adult" human body has 206 bones. At the time of birth a child has 300 bones but these bones fuse with each other as the child grows up and at adulthood the figure drops to 206.
850541
http://msxml.excite.com/info.xcite/search/web/osteocyte
14701
The adult human body has 206 bones, and a baby has about 300 bones when born.
900810
the bone marrow is the place in the body where the blood cells are produced ( Red, White and Platelets).\nA bone marrow biopsy tells the MD what the ratio between healthy, malignant and non-producing cells are.\nIn elderly people sometimes you see that the healthy cells are pushed to the side by non-producing cells (f.e.fat) or an overgrows of other cells like white cells ( leukemia).\nyou can also tell if there is a case of malnutrition or a lack of iron or vitamin ( B12).\nI hope it is a simple as that, but it is a very common thing in elderly people.
551447
Cell division or Mitosis is how your body replaces worn out cells.  All cells degrade over time, and if your body could not replace them, then you wouldn't live very long.  Partial cell division, or Meiosis(sp) is necessary for reproduction
749808
That's a slightly odd question as each of those example has more than one cell type within it. Blood has red blood cells and several types of white, bones have several sorts of cells involved with them... and so forth. There are also issues like the fact red blood cells don't divide. I'm going to assume they're talking about the cells that create the blood, but that might be wrong. It's a vaguely worded question... if you got it as a homework question, you might want to get some clarification on exactly which cells are being asked about.\n\nYou can make a few generalisations. The two obvious ones for fast division are skin and blood, simply because they are both replaced regularly in the body. Bone cells aren't replaced so frequently as bones are more static, so would be have slower cell division.\n\nThe fast cell division answer for the plant cells is probably the root tip, as this does divide quickly. Plants do need to get their root system sorted out first, as otherwise they don't have a source of water/nutients to grow the rest.
675906
The spleen filters blood and gets rid of the old and dying red blood cells.  The spleen also hold extra blood within it.\n\nBone marrow is where red blood cells are produced.
451185
to provide the structure for the muscles and to provide marrow for the production of blood cells.
190470
The Femur bone, the longest single bone in the body, is connected to the hip bone or the pelvic girdle by a ball and socket joint.
807903
Erythrocytes are produced in the bone marrow in adults and they are produced in the liver in an embryo. The spleen filters out old RBCs.