Diaphysis
The Diaphysis is the shaft of a long bone. It is the part the dog grabs onto in cartoons.  The diaphysis resists bending forces and is used as a lever by the muscles.

Periosteum
The Periosteum is a fibrous, cellular, vascular, and highly sensitive life support sheath for a bone.  It provides nutrient blod for one cells and a source of bone-developing cells during growth and after fracture.

Red Bone Marrow
Packs the space between the cancellous bone.  It develops red and some white blood cells.

Yellow Bone Marrow
Fat in diaphysis of bone which develops after childhood.

Compact Bone
Compact bone is the dense bone of the diaphysis.  It consists of repeating patterns of solid bone tissue.

Medullary Cavity
The Medulary Cavity exists in the Diaphysis of a long bone.  It lightens the weight of the bone and gives storage space for yellow bone marrow.

Articular Cartilage
Articular Cartilage is smooth, slippery, and bloodless.  It is kept moist by the fluid from the synovial lining of the joint cavity.

Nutrient Artery
Network in shaft which supplies the shaft with nutrients.  The Nutrient Artery passes through the compact bone and periosteum to connect the bone's inards to the rest of the body.