Characteristics of Skeletal System
Terms
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-Bone shape
-ex. femur -
Long Bone -
-enlarged two ends of bone
-thick spongy bone
-strengthens joint and provides for tendon/ligament attachment -
Epiphysis - -Horizontally oriented tubes that branch off from the Haversion canal
-
Volkmann Canal -
calcium
vitamins A and D
hormones
physical stress -
Factors regulating growth -
-Growth Process
- Replacement of preexiting tissues with bone -
Ossification -
Major structural unit of compact bone.
-Contains cylindrical layers of osseous tissue(LAmellae) -
Osteons - -Short region between diaphysis and epiphysis
-
Metaphysis -
1/3 organic (proteins, lipids, cells)-osteocytes, collagen fibers.
2/3 Matrix(hydroxyapatite) -
Bone Composition -
Bone growth process
-deposition of calcium salts in tissue, fills in matrix around lacunae -
Calcification - Osteon cement
-
Calcium -
_Bone tissue type
-Open network of branching plates called trabeculae
- forms middle regions of bone
-lacks osteons
-
Spongy Bone -
1-chondrocytes make carilage
2)calcium phosphate adds to matrix
3)cartilage cells organize into osteons
4)cartilage cells convert into osteocytes
5)bone tissue formed -
Process of bone elongation -
bone shape
Vertabrae -
Irregular bone -
bone shape
-cranial -
Flat bone -
- bone shape
-carpals(wrist) -
Short bone -
-Bone tissue type
-Adipose and connective tissue cells -
Marrow - -Outer membrane covering entire bone
-
Periosteum - -center of diaphysis contains bone marraw and many vessels
-
Medullary cavity -
-Bone tissue type
-Dense arrangement of osteons
-Forms outer regions of bone -
Compact(Hard Bone) - -The shaft connecting epiphysies
-
Diaphysis - -Membrane between medullary cavity and diaphysis
-
Endosteum -
-Small cavities aligned along each lamellae that house the osteocytes.
(Compact Bone) -
Lacunae - -Center of osteon, vertically oriented, forms passageway for blood vessel
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Haversion Canal -
-Interface between epiphysis and metaphysis
-site of bone elongation -
Epiphyseal plate -
Support
protection
locomotion
mineral storage
blood cell formation -
Functions of skeletal system