Gross Anatomy of Long Bones

compact bone

dense outer layer on every bone that appears smooth and solid

spongy bone

honeycomb of small, needle-like or flat pieces of bone called TRABECULAE

Open pieces full of marrow

diaphysis

tubular shaft that forms long axis of bone

Epiphysis

ends of long bones that consist of compact bones externally and spongy bone internally

epiphyseal line

where bone grows