Endosteum

The endosteum consists of single layer of cells that covers all internal bone surfaces including spicules of spongy bone and the inner surface of the marrow cavity. The endosteum also extends into Haversian and Volkmann’s canals. In non-active regions, the cells are squamous-shaped and include osteoprogenitor cells and bone lining cells. In areas of active bone deposition, osteoblasts are present; areas of bone resorption are marked by the presence of osteoclasts. 600x (left and middle); 400x (right)

The endosteum consists of single layer of cells that covers all internal bone surfaces including spicules of spongy bone and the inner surface of the marrow cavity. The endosteum also extends into Haversian and Volkmann’s canals. In non-active regions, the cells are squamous-shaped and include osteoprogenitor cells and bone lining cells. In areas of active bone deposition, osteoblasts are present; areas of bone resorption are marked by the presence of osteoclasts. 600x (left and middle); 400x (right)

The endosteum consists of single layer of cells that covers all internal bone surfaces including spicules of spongy bone and the inner surface of the marrow cavity. The endosteum also extends into Haversian and Volkmann’s canals. In non-active regions, the cells are squamous-shaped and include osteoprogenitor cells and bone lining cells. In areas of active bone deposition, osteoblasts are present; areas of bone resorption are marked by the presence of osteoclasts. 600x (left and middle); 400x (right)

The endosteum consists of single layer of cells that covers all internal bone surfaces including spicules of spongy bone and the inner surface of the marrow cavity. The endosteum also extends into Haversian and Volkmann’s canals. In non-active regions, the cells are squamous-shaped and include osteoprogenitor cells and bone lining cells. In areas of active bone deposition, osteoblasts are present; areas of bone resorption are marked by the presence of osteoclasts. 600x (left and middle); 400x (right)

The endosteum consists of single layer of cells that covers all internal bone surfaces including spicules of spongy bone and the inner surface of the marrow cavity. The endosteum also extends into Haversian and Volkmann’s canals. In non-active regions, the cells are squamous-shaped and include osteoprogenitor cells and bone lining cells. In areas of active bone deposition, osteoblasts are present; areas of bone resorption are marked by the presence of osteoclasts. 600x (left and middle); 400x (right)

The endosteum consists of single layer of cells that covers all internal bone surfaces including spicules of spongy bone and the inner surface of the marrow cavity. The endosteum also extends into Haversian and Volkmann’s canals. In non-active regions, the cells are squamous-shaped and include osteoprogenitor cells and bone lining cells. In areas of active bone deposition, osteoblasts are present; areas of bone resorption are marked by the presence of osteoclasts. 600x (left and middle); 400x (right)

The endosteum consists of single layer of cells that covers all internal bone surfaces including spicules of spongy bone and the inner surface of the marrow cavity. The endosteum also extends into Haversian and Volkmann’s canals. In non-active regions, the cells are squamous-shaped and include osteoprogenitor cells and bone lining cells. In areas of active bone deposition, osteoblasts are present; areas of bone resorption are marked by the presence of osteoclasts. 600x (left and middle); 400x (right)