Compact Bone and Spongy Bone Anatomy

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11 Terms

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Compact Bone

-Most of the skeleton is composed of this.
-Looks like solid, hard layer of bone
-Makes up the diaphysis of long bones and the external layer of all bones
-Provides protection and support; resists stresses produced by weight and movement
-Osteon (or haversian system)

<p>-Most of the skeleton is composed of this.<br>-Looks like solid, hard layer of bone<br>-Makes up the diaphysis of long bones and the external layer of all bones<br>-Provides protection and support; resists stresses produced by weight and movement<br>-Osteon (or haversian system)</p>
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Osteon (or Haversian system)

Basic unit of compact bone
-Central
-Lamellae
-Osteocytes
-Lacunae
-Canaliculi
-Perforating canals

<p>Basic unit of compact bone<br>-Central<br>-Lamellae<br>-Osteocytes<br>-Lacunae<br>-Canaliculi<br>-Perforating canals</p>
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Central Canal (Haversian)

Contains blood vessels and nerves

<p>Contains blood vessels and nerves</p>
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Lamellae

Concentric rings of matrix.

<p>Concentric rings of matrix.</p>
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Osteocytes

Mature Bone cells.

<p>Mature Bone cells.</p>
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Lacunae

Spaces which contain Osteocytes.

<p>Spaces which contain Osteocytes.</p>
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Canaliculi

Tiny canals that link osteocytes to central canal.

<p>Tiny canals that link osteocytes to central canal.</p>
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Perforating canals

Tunnels that connect one central canal to another in different osteons.

<p>Tunnels that connect one central canal to another in different osteons.</p>
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Spongy Bone

-Composed of trabeculae
-Makes up the epiphyses of long bones and most short, flat and irregular bones
-Red bone marrow

<p>-Composed of trabeculae<br>-Makes up the epiphyses of long bones and most short, flat and irregular bones<br>-Red bone marrow</p>
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Trabeculae

A lattice of bone with spaces between that contain red bone marrow.

<p>A lattice of bone with spaces between that contain red bone marrow.</p>
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Red bone marrow

Produces blood cells.

<p>Produces blood cells.</p>