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Chapter 7 Bone Tissue Part 2

Across
Haversian system- structural functional unit of compact bone
Bone is a composite material, a combination of a ceramic & polymer
Produces blood cells Located in all marrow spaces of infants Located only in adult axial skeleton and proximal heads of humerus and femur
Inorganic portion where the hardness allows the bone to support body weight without sagging
Soft tissue occupying marrow cavities of long bones and small spaces of spongy bone
Volkmann- Transverse or diagonal passages that transmit blood vessels for the nourishment and energy of the osteon
Surrounds the central(haversian)canal running longitudinally
Found in adults Fatty marrow that does not produce blood
85% hydroxyapatite (crystallized calcium phosphate salt) Remaining portion: calcium carbonate + other minerals
Bone that is covered with endosteum Contains slivers of bone called trabeculae Spaces filled with red bone marrow Few Osteons and no central canals Provides strength with minimal weight
the mechanism responsible for the formation of all long bones of the axial skeleton (vertebrae and ribs) and the appendicular skeleton (limbs).
Down
Bone is a composite material, a combination of a ceramic and polymer
Organic Matrix- secreted by osteoblasts (Collagen+ Carbohydrat- protein complexes)
The formation of bone in human fetus and infants, that can develop by 2 pathways Intramembranous ossification or Endochondral ossification
By dry weight, about 1/3 organic and 2/3 inorganic
Soft tissue occupying marrow cavities of long bones and small spaces of spongy bone
Produces blood cells Located in all marrow spaces of infants Only located in the axial skeleton and proximal heads of humans and femur
Inorganic matrix that produces hardness, which allows the bone to support body wieght without sagging
Found in adults Fatty marrow that does not produce blood
Organic matrix gives some flexibility plasticity prevents excessive fracturing
The organic matrix that gives some flexibility In addition the plasticity prevents excessive fracturing