Structure and Classification of Bone/ Organization of the Skeleton

Structure and Classification of Bone

Tendons Movement

Cartilage and bone support the rest of the body Cartilage –Matrix is a firm gel –Cells called chondrocytes –Cells found in lacunae –Three types: hyaline, elastic and fibrocartilage Supporting connective tissues

Bone shapes Long Flat Short Irregular Sesamoid Sutural

Compact bone (dense) –Dense and forms the surface of bones –Extremely hard Spongy bone (cancellous) –low density and strength –fills the inner cavity of long bones –contains red bone marrow where the production of blood cellular components (known as hematopoiesis) takes place Bone structure = two types of bone

Bone Structure

Figure 4.16

Figure 6.3b, c The Histology of Compact Bone

perforating (Volkmann) canal central (Haversian) canal

Organization of the Skeleton

Major Divisions Axial portion (green) –Head –Neck –Trunk Appendicular portion (tan) –Arms –Legs

Table 07.04