Bone tissue types - compact and spongy
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Bone tissue types
• There are two types of bone tissue: compact and spongy.
• All the bones of the skeleton have both kinds of bone tissue.
• Compact (dense) bone
• Arranged in osteons (Haversian systems), units of lamellae laid down in adjoining series of concentric rings.
• Protective and supportive along the horizontal axis.
• Found in areas that need strength.
• Spongy (cancellous) bone
• Lamellae arranged in branching columns called trabeculae.
• Spaces between trabeculae are filled with either red or yellow marrow.
• Found in areas where stress is applied from many directions such as the epiphyses of long bones and the bones of the skull.