Characterization of Long Bones

Epiphysis

The end part of a long bone, filled with spongy bone and containing red marrow.

Diaphysis

The shaft or central part of a long bone, primarily composed of compact bone.

Hematopoiesis

The process of producing blood cells, occurring in red marrow within the spongy bone of the epiphyses.

Yellow marrow

Primarily composed of adipose tissue, serves as a storage site for fats, found in the medullary cavity of long bones.

Epiphyseal plate

Also known as the growth plate; site where new bone tissue forms in children, allowing for longitudinal growth.

What are concentric lamellae?

Layers of calcified matrix that form the structural framework of compact bone.

What are lacunae?

Small spaces within the bone matrix that house osteocytes.

What is the central (Haversian) canal?

A longitudinal canal that carries blood vessels and nerves through the bone.

What is the bone matrix?

The nonliving structural part of bones, consisting of organic and inorganic components.

What are canaliculi?

Microscopic channels that connect lacunae and facilitate communication and nutrient exchange between osteocytes.