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16 Cards in this Set
- Front
- Back
- 3rd side (hint)
System system |
Consists of bones and cartilages. Tissue types; 1. osseous tissue 2. epithelial tissue 3. dense irregular collagenous connective tissue 4. adipose tissue |
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Periosteum |
- Most superficial tissue of bone
- composed of dense irregular collagen is connective tissue
- richly supplied with blood vessels
- innermost layer contains osteogenic cells ( become osteoblast) and osteoclast |
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Osteoblast |
- Secrete bone matrix - Builders (We're osteogenic cells) |
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Osteoclast |
- Secrete enzymes that catalyze- - brakedown down bone matrix |
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Perforating or Sharpey's fibers |
Bundles of collagen that anchor the peritoneum to the bone |
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Osseous tissue |
1.) Compact bone (cortical) 2.) spongy bone (cancellous) (Deep from periosteum) |
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Compact Bone |
( type of osseous tissue) Hard dense bone tissue deep to periosteum consist of osteons |
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Osteons |
A structure which consists of Repeating densely packed subunits (Makes up compact bone) Basic functional unit of mature compact bone. Consists of osteocytes.
Features : 1.) Lamellae 2.) Central canal (Haversain) 3.) Lacunae 4.) Perforating canals (Volksmanns)
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Lamellae |
Concentric rings of bone matrix of compact bone give strength (like tree rings) |
Thin plate |
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Central canal |
Haversain Center of an osteon contains blood vessels and nerves lined with endosteum Endosteum An inner layer of osteoblasts connective tissue membrane secretes bone matrix and osteoclasts degrade bone |
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Lacunae Osteocytes Canaliculi |
Between Lamellae small cavities
Contain "mature" osteoblasts called osteocytes monitor/maintain bone matrix
Canaliculi- Tiny conals that connect neighbor lacunae and osteocytes
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Osteocytes |
Mature osteoblasts In lacunae Maintain/monitor bone matrix |
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Perforating canals |
Volksmanns Lie perpendicular to osteon Carry blood vessels into the bone from periosteum Lined by endosteum |
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Spongy Bone |
Deep inside compact bone with tiny bone spicules Trabeculae Consists of latticework-type structure with tiny bone spicules TrabeculaeBone marrow:Red bone marrow (Makes RBCs)Yellow bone marrow (adipose tissue) Bone marrow: Red bone marrow (Makes RBCs) Yellow bone marrow (adipose tissue) |
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Trabeculae |
Tiny bone spicules latticework type structure in spongy bone Composed of Lamellae NOT composed into osteons |
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Osseous tissue Organic Collagen Inorganic |
A type of connective tissue
2 Chemical components: 1.) Organic Component: Proteins fibers (collagen) Collagen- provides supportive network Gives bone tensile strength (withstand stretching and twisting)
2.) Inorganic Component: Consists of Calcium ions Form of calcium hydroxyapatite crystals. Provides compression all strength
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