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16 Cards in this Set

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System system

Consists of bones and cartilages.



Tissue types;


1. osseous tissue


2. epithelial tissue


3. dense irregular collagenous connective tissue


4. adipose tissue

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

Osteoblast

- Secrete bone matrix



- Builders



(We're osteogenic cells)

Osteoclast

- Secrete enzymes that catalyze-



- brakedown down bone matrix

Perforating or Sharpey's fibers

Bundles of collagen that anchor the peritoneum to the bone

Osseous tissue

1.) Compact bone (cortical)


2.) spongy bone (cancellous)



(Deep from periosteum)

Compact Bone

( type of osseous tissue)



Hard dense bone tissue deep to periosteum consist of osteons

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)


Lamellae

Concentric rings of bone matrix of compact bone


give strength (like tree rings)

Thin plate

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

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



Osteocytes

Mature osteoblasts


In lacunae



Maintain/monitor bone matrix

Perforating canals

Volksmanns



Lie perpendicular to osteon


Carry blood vessels into the bone from periosteum


Lined by endosteum

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)


Trabeculae

Tiny bone spicules


latticework type structure in spongy bone



Composed of Lamellae


NOT composed into osteons

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