The Skeletal System Flashcards
Hemopoiesis
Occurs in the red bone marrow
Triglyceride storage
Where we make adipocytes in YELLOW bone marrow
Red bone marrow VS. Yellow bone marrow
Red bone marrow is to there to make stem cells for blood and yellow bone marrow is going to be storage of fat
Red Bone Marrow- Hemopoiesis
The red bone marrow is going to be the place where Hemopoiesis takes place, red bone marrow contains stem cells they undergo mitosis
Yellow bone Marrow
Found in shaft of the bone, Lipid Storage
Short, flat, and i irregular bones, composed, mainly of inner SPONGY bone with outer layer of COMPACT bone. Spongy bone is also located at the EPIPHYSES of long bones.
Some spongy bone are filled with RED BONE MARROW this is to allow for hemetopoisis or the production of blood cells to occur.
Bones hardness…
Dependson the crystallized inorganic mineral salts, if you remove the mineral salts from bone it is rubbery
Calcification
The process of this crystallization of the mineral salts in order to cause those cells to bindand build together this gives the hardness
Bone flexibility…
Comes from the collagen fibers The bones flex, before they actually break
Osteoprogenitor (or Osteogenic) Cells
Stem cells, undergo mitosis, they produce osteoblasts, inner layer of periosteum
Osteoblasts
Not cable of mitosis, bone builders, initiate calcification, blasts will be walled Off. MAKES THE MATRIX
Osteocytes
Found in lacunae, there to maintain the area. MAINTAINS THE MATRIX.
Osteoclasts
The bone destroying cells break apart the calcium and release it back to the blood
Osteoporosis
The amount of bone breaking down should equal the amount of bone building up. The problem is whenever the OSTEOCLASTS start to tear down bone faster than the BLASTS can build.
Bone Deposition
Associated with osteoblasts on the periosteum side of the bone.