Bone

Only one found in a lacuna and the Main bone cells

• Osteogenic cells

• Osteoblasts

• Osteocytes

• Osteoclasts

dense fibrous CT - important for growth and regeneration because of osteogenic layers

• Periosteum

• Endosteum

• Osteogenic layer

• Sharpey’s fibers

Lines the central medullary cavity - Contains: osteogenic and hemopoietic cells

• Periosteum

• Endosteum

• Osteogenic layer

• Sharpey’s fibers

Inner layer of periosteum

• Periosteum

• Endosteum

• Osteogenic layer

• Sharpey’s fibers

Collagenous fibers - To keep periosteum attached to the bone

• Periosteum

• Endosteum

• Osteogenic layer

• Sharpey’s fibers

Concentrically arranged bone lamellae

• Bony matrix

• Periosteal lamella

• Endosteal lamella

• Haversian system

External circumferential - Immediately beneath

• Bony matrix

• Periosteal lamella

• Endosteal lamella

• Haversian system

Internal circumferential - Immediately surrounding

• Bony matrix

• Periosteal lamella

• Endosteal lamella

• Haversian system

Which bone is #18?

• Tibia

• Humerus

• Clavicle

• Sternum

What bone is #7?

• Humerus

• Ulna

• Radius

• Carpals